Appendix I 

Special Status Species Tables 
Table I-1 Analysis of Special Status Species 

I-1

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Federal Mammals Black-footed ferret 

Mustela nigripes FE; USFSR4S; CO-E; 

WY-NSS1; KS-E 

Suitable habitat consists of black-tailed prairie dog colonies or complexes (80 acres or greater) or White-tailed prairie dog colonies or complexes (200 acres or greater). Most litters are born in May and emerge from their nursery dens in July. 

Low. Historic occurrence along the proposed project route in Wyoming, Colorado, and Kansas. 

No. BLM 2006a,b; 

WYNDD 2005; CNHP 2006; Derby et al. 2006; KDWP 2005; USFWS 2005; WGFD 2005c. 

Preble's meadow jumping mouse 

Zapus hudsonius preblei 

FT w/CH; CO-T 

This subspecies occurs in habitats consisting of well-developed plains riparian vegetation with dense herbaceous vegetation that include of a variety of grasses, forbs, and thick shrubs in close proximity to water. Suitable habitat can occur along stream channels, vegetated irrigation canals, ditches, and riparian and wetland areas (including wet meadows). Hibernation occurs from September-October to April-May. Nests are constructed in underground burrows. Young are born between mid-June and late July. 

Moderate. This species has been documented along the proposed project route. Suitable habitat for this species occurs in riparian habitats in Albany and Laramie counties Wyoming; and Morgan and Weld counties, Colorado. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

No. CNHP 2006; Derby 

et al. 2006; KDWP 2005; USFWS 2005. 

Canada lynx Lynx Canadensis FT; USFSR4S; WYNSS1 Northern coniferous forests are the preferred habitat of the lynx. Uneven-aged stands with relatively open canopies and well-developed 

understories are ideal. Young born between May and July. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming, Colorado, or Kansas. The USFWS did not identify this species for analysis. 

Yes. The proposed project route does not occur within the geographic range of this species. 

NatureServe 2006; Cerovski et al. 2004; WGFD 2005c; NatureServe 2006. 

Gray wolf Canis lupus FT Formerly thought to be extinct in Wyoming, 

reintroduction in the Yellowstone area has lead to a viable population in that portion of the state. The gray wolf occupies a variety of habitats in that area, often associated with ungulate herds, such as elk. Pups born between March and late-April. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming, Colorado, or Kansas. The USFWS did not identify this species for analysis. 

Yes. The proposed project route does not occur within the geographic range of this species. 

USFWS 2005; NatureServe 2006. 
Table I-1 Analysis of Special Status Species 

I-2

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Grizzly bear Ursus arctos 

horribilis 

FT; WYNSS3 Formerly a habitat generalist, the grizzly now occurs only in the montane regions of northwest 

Wyoming, where it can be found in a wide variety of habitats from open grassland plateaus to conifer forests. Cubs born between January and March. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming, Colorado, or Kansas. The USFWS did not identify this species for analysis. 

Yes. The proposed project route does not occur within the geographic range of this species. 

USFWS 2005; WGFD 2005c; NatureServe 2006. 

Birds Yellow-billed cuckoo 

Coccyzus americanus 

FC; USFSR4S; BLMWY; WYNSS2 This species inhabits lowland deciduous woodlands, willow and alder thickets, mature cottonwood-riparian woodlands, deserted farmlands, and orchards. Breeding typically 

occurs in riparian woodlands. Breeding Season: June 1 through July 31. 

Low. This species has been documented within the vicinity of the proposed project route in Wyoming. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado. 

No. BLM 2002; BLM 

2006a,b; WYNDD 2005; CNHP 2006; Derby et al. 2006; USFS 2005; NatureServe 2006; Kingery 1998; USFWS 2005; WGFD 2005d. 

Whooping crane 

Grus americana FE; CO-E; 

KS-E 

During migration, this species feeds and roosts in a variety of habitats including croplands, large and small freshwater marshes, the margins of lakes and reservoirs, and submerged sandbars in rivers. Spring and Fall migration through the Proposed project regions generally occurs from February through April and from October through November, respectively. Breeding Season: May 1 through July 31. 

Low. Occurrence of this species along the proposed project route would be limited to migrating individuals from the ArkansasWood Buffalo population in eastern Colorado and Kansas. Affected by water depletions to the Platte River in Colorado and Wyoming. Also affected by proposed project activities occurring during migration in Barton, McPherson, Rice, Russell, Sheridan, and Trego County, Kansas. 

No. CNHP 2006; Derby 

et al. 2006; NatureServe 2006; Kingery 1998; USFWS 2005; KDWP 2005. 

Interior least tern 

Sterna antillarum athalassos 

FE; KS-E; CO-E 

Nesting habitat consists of sparsely vegetated sandy, gravelly, or silty, beaches and sandbars within wide, unobstructed river channels or salt flats along lake shorelines and irrigation reservoirs. Nest locations are generally away from the water’s edge since nesting typically begins while river flows are high and relatively small amounts of sandy habitat is exposed. Breeding season: May 1 through August 15. 

Low. In Colorado: Adobe Creek and Nee Noshe Reservoirs, Kiowa County, and Horse Creek Reservoir, Otero County. Affected by water depletions to the Platte River in Wyoming and Colorado. Affected by proposed project activities occurring during migration in Barton and Rice County, Kansas. 

No. CNHP 2006; Derby 

et al. 2006; Haig and Elliot-Smith 2004; NatureServe 2006; Kingery 1998; USFWS 2005; KDWP 2005. 
Table I-1 Analysis of Special Status Species 

I-3

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Piping plover Charadrius 

melodus circumcinctus 

FT; CO-T; KS-T 

This species inhabits open sandy areas and saline flats with little vegetation along rivers, lakes, ponds, and marshlands. It nests on sandbars and sand and gravel beaches with short, sparse vegetation along inland lakes, on natural and dredge islands in rivers, on gravel pits along rivers, and on salt-encrusted bare areas on interior alkali ponds and lakes. Sparse clumps of grass or herbaceous vegetation are important habitat components. Breeding season: May 1 through August 15. 

Low. Current breeding range occurs along the Platte River, the Arkansas River, reservoirs in eastern Colorado. Affected by water depletions to the Platte River Colorado and Wyoming. Affected by proposed project activities occurring during migration in Barton and Rice County, Kansas. 

No. CNHP 2006; Derby 

et al. 2006; NatureServe 2006; Kingery 1998; USFWS 2005; KDWP 2005. 

Lesser prairie chicken 

Tympanuchus pallidicinctus 

FC; CO-T Open shortgrass prairie habitat. 

Breeding Season: April 1-September 15. 

Low. No known occurrence within the vicinity of the proposed project route in Kansas; however, potential breeding habitat occurs in Kansas south of I-70 in Trego County and in Ellis County. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming or Colorado. 

No. CNHP 2006; Derby 

et al. 2006; Kingery 1998; USFWS 2005. 

Eskimo curlew 

Numenius borealis 

FE; KS-E This species is a rare spring migrant that feeds 

and rests in burned-over prairies, agricultural areas, and marshes. In Kansas, Eskimo Curlews were formerly a regular spring transient through the eastern half of the state. In Kansas, Eskimo Curlews were formerly a regular spring transient through the eastern half of the state. They are now considered extirpated from Kansas. Breeding Season: June 1 through August 15. 

Extremely Low. This species was not identified by the USFWS for analysis. This species and its required habitat are not found within the proposed project vicinity in Wyoming or Colorado. Occurrence in Kansas would be limited to accidental migrants. 

Yes. There is no known historic occurrence within counties crossed by the proposed project route. 

CNHP 2006; Derby et al. 2006; NatureServe 2006; Kingery 1998; USFWS 2005; KDWP 2005. 

Mexican spotted owl 

Strix occidentalis FT; USFSR4S; COSOC Occurs in moderately closed (>50% canopy cover) and steep (>40% grade) in portions of the Rocky Mountain west. Critical habitat has 

been designated in Weld County, Colorado. Breeding Season: April 1 through August 31. 

None. This species and its required habitat are not found within the proposed project vicinity in Wyoming, Colorado, or Kansas. 

Yes. CNHP 2006; Derby 

et al. 2006; Kingery 1998; USFWS 2005. 
Table I-1 Analysis of Special Status Species 

I-4

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Amphibians Wyoming toad 

Bufo baxteri FE, WYNSS1 This species inhabits floodplains, ponds, and small seepage lakes in shortgrass communities 

of the Laramie Basin. Requires some deep soft soil for burrowing. Breeding occurs in May through August. 

Low. An historic observation of this species was documented along the proposed project route in Laramie River Valley in Albany County, Wyoming. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado or Kansas. 

No. USFWS 2005; 

Cerovski et al. 2004; Keinath et al. 2003. 

Fish Bonytail Gilia elegans FE; CO E; 

USFS-R4S 

This rare species occur in larger river channels of Green, Colorado, Yampa, and Gilia Rivers in Colorado River drainage. This species primarily occupies pools and eddies rather than areas with swift current. Spawning typically occurs in June and July. 

Low. Critical habitat and historic occurrence in the Green River. 

No. USFWS 1990, 

1993; Woodling 1985. 

Colorado pikeminnow 

Ptychocheilus lucius 

FE; CO-E This species occurs in big, deep-water riverine 

habitats at a variety of depths and velocities over silt, sand, gravel, and boulder substrates. Spawning occurs in run, eddy, and pool habitats in from June through August. Young fish primarily inhabit shallow, backwater areas over silt and sand bottoms. 

Low. Critical habitat and known occurrence in the Green River. 

No. USFWS 1993; 

Woodling 1985. 

Humpback chub 

Gilia cypha FE; CO E; 

USFS-R4S 

This species occupies a variety of riverine habitats including in deep water pools riffles and eddies over silt, sand, boulder, and bedrock substrate. Spawning typically occur after the highest spring flows when water temperatures approach 68oF. Young fish utilize shallow areas 

in backwaters, eddies, and runs. 

Low. Critical habitat and known occurrence in the Green River. 

No. Lee et al. 1980; 

USFWS 1993; Woodling 1985. 

Razorback sucker 

Xyrauchen texanus 

FE; CO-E; USFS-R4S 

This species is found in backwaters, eddies, pools, and flat-water areas in the main channel. Sand or silt substrates with low water velocity are preferred. Spawning occurs over mixed substrate in the spring with rising water levels and increasing temperatures ranging from 48o 

to 63oF. Young fish utilize quiet, shallow 

backwaters and river margins. 

Low. Critical habitat and known occurrence in the Green River. 

No. USFWS 1993; 

Woodling 1985. 
Table I-1 Analysis of Special Status Species 

I-5

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Pallid sturgeon 

Scaphirhynchus albus 

FE; KS-E It inhabits bottom areas of large turbid rivers 

that have strong current and a firm sandy substrate. They also may be found along sandbars and behind wing dikes. Spawning period: April through August. 

Low. Known occurrence in the Platte River below the Elk River confluence. 

No. GPNC 2005b. 

Arkansas darter 

Etheostoma cragini 

FC; KS-T Species is found in clear streams with low 

current, sandy substrates, and abundant aquatic vegetation. 

None. Found in tributaries of the Arkansas River 

Yes. Although this species occurs in Kansas, it does not occur in any portion of the project area as proposed (USFWS 12/13/05). 

USFWS 2005; Woodling 1985. 

Arkansas river shiner 

Notropis girardi FT; KS-E Species is found in wide, shallow rivers and 

streams with sandy bottoms. 

None. Presently restricted to tributaries of the Arkansas River drainage in Kansas. 

Yes. USFWS; KDWP 

website. 

Topeka shiner Notropis topeka FE; KS-T This species inhabits pool and run areas in the 

headwaters of small prairie streams with high water quality and cool temperatures. These streams generally exhibit intermittent flow during summer; however pools are maintained by spring or groundwater percolation. The substrate of these occupied streams consist mainly of clean gravel, however bedrock and clay hardpan overlain by a thin silt layer are not uncommon. Spawning period: late spring and summer. 

None. Restricted to a few scattered tributaries to the Missouri and Mississippi rivers and the Flint Hills in Kansas. 

Yes. KDWP 2004; 

Bessken 1997; Cross 1967; Pflieger 1975; KDWP website. 

Plants Colorado butterfly plant 

Gaura neomexicana ssp. coloradensis 

FT This subspecies is a short-lived, perennial herb 

endemic to moist soils in mesic or wet meadows of floodplain areas in southeastern Wyoming, northcentral Colorado, and extreme western Nebraska. This early to mid-seral stage species occurs primarily in habitats created and maintained by streams active within their floodplains, with vegetation that is relatively open and not overly dense or overgrown. It also is found on sub-irrigated, alluvial soils of drainage bottoms surrounded by mixed grass prairie. Elevation: 5,800-6,400 feet. Flowering period: late June to early October. 

High. Laramie County, Wyoming, and Weld County, Colorado. Regional endemic of the North and South Platte watersheds of Wyoming, northeast Colorado, and adjoining Nebraska. It occupies riparian habitats with at least seasonal water flow. Critical habitat present, surveys required. 

No. Critical and Suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

Fertig et al. 1994; Keinath et al. 2003; Humphrey 2005b; BLM 2002, 2006b; Derby et al. 2006. 
Table I-1 Analysis of Special Status Species 

I-6

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Blowout penstemon 

Penstemon haydenii 

FE This species occurs on steep, northwest-facing 

slopes of active, blowout sand dunes with sparse vegetative cover. Flowering period: May through June. Elevation: 6,680-7,440 feet. 

Low. Endemic to sand dunes south of Ferris Mountains in Carbon County, Wyoming. 

No. If suitable habitat is encountered along pipeline, surveys will be conducted. 

Fertig 2000; BLM 2002, 2006b;Derby et al. 2006; Humphrey 2005b. 

Ute ladies'tresses 

Spiranthes diluvialis 

FT ; USFSR4S This perennial, terrestrial orchid grows in moist to very wet meadows along streams or in 

abandoned stream meanders that still retain ample ground water. It also occurs near springs, seeps, and lakeshores. Elevational: 4,265-5,249 feet. Flowering period: late July through August. 

Moderate. Moist soils and wet meadows in Wyoming counties, and Morgan and Weld counties, Colorado 

No. Suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

BLM 2002; Fertig 2000; Humphrey 2005b. 

Western prairie fringed orchid 

Platanthera praeclara 

FT Occurs in mesic upland tallgrass prairie, wetmesic tallgrass prairie, and sedge meadows. 

Also known from prairies and swales in dune complexes that are fed by shallow underground water. Flowering period: June through July 

None Yes. USDA 2007; HullSieg and Bjugstad 

1994. 

BLM Mammals Fringed myotis 

Myotis thysanodes 

BLM-WY; WY-NSS2; USFS-R2S 

This species primarily inhabits coniferous forests, woodland-chaparral, and basin-prairie shrublands, but have been documented in spruce-fir habitats. Roost sites include caves, abandoned mines, rock crevices, and buildings. Pups born between May and July. 

Low. This species has been documented in the vicinity of the proposed project route in Wyoming. No roosts or maternity colonies are known to occur on the PNG; however, suitable habitat is present. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CNHP 2006; Derby et al. 2006; USFS 2005; WGFD 2005c; Ellison 2003. 

Long-eared myotis 

Myotis evotis BLM-WY; 

WY-NSS2 

Conifer and deciduous forests, caves and mines. Found in conifer forests, especially ponderosa pine. Forage over water holes and possible openings in conifer forests. Roosts in caves, buildings, and mines. Pups born between May and August. 

Moderate. This species has been documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Cerovski et al. 2004; WGFD 2005c; Ellison 2003. 
Table I-1 Analysis of Special Status Species 

I-7

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Spotted bat Euderma 

maculatum 

BLM-WY; WY-NSS2; USFS-R4S 

Cliff roosting, generally near perennial water and in a variety of habitats (including desert, shrub-steppe, and evergreen forest). Pups born between May and July. 

Low. No known occurrence in the vicinity of the proposed project route in Wyoming; however, suitable habitat is present. 

No. WYNDD 2005; 

Derby et al. 2006; Cerovski et al. 2004; CDOW no date, 2006; CNHP 2005; WGFD 2005c; Ellison 2003. 

Townsend's big-eared bat 

Plecotus townsendii 

BLM-WY; WY-NSS2; CO-SOC; KSSINC; USFSR4S 

This species inhabits dry coniferous forests, juniper woodlands, deciduous forests, basins, desert shrublands, and grasslands. Roost sites typically include caves and abandoned mines, but rock outcrops and buildings also will be used. Pups born between May and July. 

Low. This species has been documented in the vicinity of the proposed project route in Wyoming. No known occurrence in the vicinity of the proposed project route in Colorado or Kansas; however, suitable habitat is present. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CNHP 2006; USFS 2005; CDOW no date, 2006; Derby et al. 2006; KDWP 2005; KSNHD 2005; WGFD 2005c; Ellison 2003. 

Pygmy rabbit Brachylagus 

idahoensis 

BLM –WY; 

USFS-R4S; 

Basin prairie and riparian shrub. Two key habitat components include relatively dense/tall sagebrush compared to the surrounding landscape and deep soils. Breeding period extends from spring to early summer. 

Moderate. This species has been documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Cervoski et al. 2004; Derby et al. 2006; NatureServe 2006. 

Swift fox Vulpes velox BLM-WY COSOC; USFSR2S This species is found in short-, mid-, and mixed grass prairies with gently rolling hills. Den sites are typically located on flat areas or along 

slopes or ridges that provide a good view. Dens are typically on sites dominated by blue grama or buffalo grass. Young are born in late March, April, or early May. 

Moderate. This species has been documented along the proposed project route in Colorado, and in the vicinity of the proposed project route in Wyoming. This species is widespread on the PNG. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CDOW no date, 2006; CNHP 2006; Derby et al. 2006; USFS 2005. 

White-tailed prairie dog 

Cynomys leucurus 

BLM-WY This species occupies basin-prairie and 

mountain-foothill shrublands, sagebrushgrasslands, barren and overgrazed areas, and agricultural areas. Young are born between March and mid-June. 

Moderate. This species has been documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CNHP 2006; USFS 2005; Derby et al. 2006; NatureServe 2006. 
Table I-1 Analysis of Special Status Species 

I-8

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Black-tailed prairie dog 

Cynomys ludovicianus 

BLM-WY; USFS-R2S; CO-SOC 

This species Inhabits short-grass or mixed grasslands that contain suitable upland soil types for constructing burrow systems. Young are born between April and mid-June. 

High. This species has been documented along the proposed project route in Colorado. Numerous active colonies have been documented on the PNG. 

No. CNHP 2006; USFS 

2005; CDOW no date, 2005; Derby et al. 2006; USFWS 2005; NatureServe 2006. 

Idaho pocket gopher 

Thomomys idahoensis 

BLM-WY Shallow stony soils. 

Young born between March and mid-June. 

Low. No known occurrence of this species in the vicinity of the proposed project route in Wyoming; however, suitable habitat is present. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; NatureServe 2006. 

Wyoming pocket gopher 

Thomomys clusius 

BLM-WY Meadows with loose soil. 

Dry upland areas (ridgetops, etc.) characterized by loose, gravel-like soil. Endemic to Wyoming, they are often observed near Bidger’s Pass. Young born between March and Mid-June. 

Moderate. This species has been documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; NatureServe 2006. 

Birds Bald eagle Haliaeetus 

leucocephalus 

BLM-WY; USFS- R4S; CO-T; WYNSS2; KS-T 

This species typically occurs near large bodies of water that support suitable roosting and foraging habitat. Nests are commonly built in mature cottonwoods or conifers along lakes or other large bodies of water. Wyoming Breeding Season: February 1-July 31. Colorado Breeding Season: November 15 through July 31. Wyoming Winter Roosting Period: November 15 through April 30. Colorado Winter Roosting Period: November 15 through March 15. 

Moderate. This species has been documented along the proposed project route in Wyoming and Colorado. No known occurrence in the vicinity of the proposed project route in Kansas; however suitable habitat is present. 

No. BLM 1990, 2006a,b; 

WYNDD 2005; CNHP 2006; Derby et al. 2006; KDWP 2005; Kingery 1998; NatureServe 2006; USFWS 2005; WGFD 2005d; Craig 2002. 
Table I-1 Analysis of Special Status Species 

I-9

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Burrowing owl Athene 

cunicularia 

BLM-WY; USFS-R2S; CO-T 

This species nests in non-riparian habitats including abandoned burrows of prairie dogs, ground squirrels, foxes, and badgers in grassland, open shrubland, and woodland communities. Wyoming Breeding Season: February 1 through July 31 Colorado Breeding Season: April 1 through October 31. 

High. This species has been documented along the proposed project route in Wyoming and Colorado. This species has been documented on all Breeding Bird Survey routes within the PNG. 

No. BLM 1990, 2002, 

2006b; WYNND 2005; CDOW 2005; CNHP 2006; USFS 2005; Derby et al 2006; Kingery 1998; Craig 2002. 

Mountain plover 

Charadrius montanus 

BLM-WY; USFS-R2S; USFS-R4S; CO-SOC; KS-SINC 

Habitat for this species includes shortgrass prairie where grazing is intensive, or in areas of fallow or burned fields, dry mudflats, or active prairie dog colonies. Areas of flat bare ground (>30%) appears to be the most prominent characteristic of suitable breeding habitat. Breeding season: March 15 through July 31. 

High. This species was documented along the proposed project route in Wyoming and Colorado. No known occurrences in the vicinity of the proposed project route in Kansas; however suitable habitat is present. Occurrence surveys conducted on the PNG in the mid 1990’s show widespread breeding use of the PNG. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CNHP 2006; CDOW 2005; Derby et al. 2006; USFS 2005; NatureServe 2006; KDWP 2005; Kingery 1998; KSNHD 2005. 

Brewer's sparrow 

Spizella breweri BLM-WY; 

USFS-R2S 

Sagebrush foothills and medium-height sagebrush in basins. Also, mountain mahogany hills. Breeding Season: May 15 through July 31. 

High. This species was documented along the proposed project route in Wyoming. This species has been documented on all Breeding Bird Survey routes within the PNG. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; USFS 2005; Derby et al. 2006; Kingery 1998. 

Ferruginous hawk 

Buteo regalis BLM-WY; 

CO-SOC; USFS-R2S; KS-SINC 

This species occurs in open semi-arid habitats including basin-prairie shrubland, mountainfoothills, badlands, and grassland. Nest sites include trees, ledges, and rock outcrops in sagebrush valleys and rolling grassland habitat. Wyoming Breeding Season: February 1 through July 31. Colorado Breeding Season: February 15 through July 15. 

High. This species was documented along the proposed project route in Wyoming and Colorado. No known occurrences in the vicinity of the proposed project route in Kansas; however suitable habitat is present. There is known nesting and occurrence on the PNG. 

No. BLM 1990, 2002, 

2006a,b; USFS 2005; WGFD 2005; CDOW 2005; CNHP 2006; WYNDD 2005; Derby et al. 2006; KDWP 2005; Kingery 1998; KSNHD 2005; Craig 2002. 
Table I-1 Analysis of Special Status Species 

I-10

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Loggerhead shrike 

Lanius ludovicianus 

BLM-WY; USFS-R2S 

This species typically inhabits open riparian areas, agricultural areas, grasslands, and shrublands (especially semidesert shrublands). Nest sites usually occur in isolated trees or large shrubs. Breeding Season: April 1 through June 30. 

High. This species was documented along the proposed project route in Wyoming. This species has been documented on the PNG on all Breeding Bird Survey routes. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CNHP 2006; CDOW 2006; Derby et al. 2006; USFS 2005; NatureServe 2006; Kingery 1998; Yosev 1996. 

Long-billed curlew 

Numenius americanus 

BLM-WY; CO-SOC; USFS-R2S; KS-SINC 

Grasslands, plains, foothills, wet meadows. Breeding Season: March 15 through August 1. 

Moderate. This species was documented along the proposed project route in Wyoming and Colorado. No known occurrences in the vicinity of the proposed project route in Kansas; however suitable habitat is present. Incidental observations on the PNG. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; CNHP 2006; CDOW 2006; Derby et al. 2006; USFS 2005; NatureServe 2006; KDWP 2005; Kingery 1998; KSNHD 2005. 

Northern goshawk 

Accipiter gentiles BLM-WY; 

USFS-R4S 

This species occupies mature, closed-canopied coniferous and aspen forests habitats. This species nests open older-aged class coniferous forests and aspen stands. Breeding Season: April 15 through August 31. 

Moderate. This species was documented within the vicinity of the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; NatureServe 2006. 

Golden eagle Aquila chrysaetos BLM-WY; 

KS-SINC 

This species occurs in a variety of habitats including grassland, pinyon-juniper woodland, coniferous and deciduous forests, shrubland, and rock outcrop. Nest sites are usually on located on cliffs and occasionally in large trees in open habitats. Wyoming Breeding Season: February 1 through July 15. Colorado Breeding Season: December 1 through July 15. 

High. This species was documented along the proposed project route in Wyoming. No known occurrences in the vicinity of the proposed project route in Kansas; however suitable habitat is present. 

No. BLM 1990, 2002, 

2006a,b; WYNDD 2005; Derby et al. 2006; NatureServe 2006; KDWP 2005; KSNHD 2005; Craig 2002. 
Table I-1 Analysis of Special Status Species 

I-11

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Peregrine falcon 

Falco peregrinus BLM-WY; 

USFS-R4S; KS-E 

This species is found over a wide variety of habitats, but are generally located near open water or marshes that support high concentration of shorebirds or waterfowl. Nest sites occur on tall steep-walled cliffs, bridges, or buildings. Preferred foraging habitat includes lakes, rivers, and wet meadows. Breeding season: February 1 through July 31. 

Moderate. This species was documented along the proposed project route in Wyoming. No known occurrence in the vicinity of the proposed project route in Kansas and Colorado; however, suitable breeding habitat is present 

No. BLM 1990, 2002, 

2006a,b; WYNDD 2005; CNHP 2006; Derby et al. 2006; USFS 2005; KDWP 2005; Kingery 1998. 

Sage sparrow Amphispiza belli BLM-WY Sagebrush, basin prairie shrub, mountain 

foothill shrub. Breeding Season: April 1 through July 31. 

Moderate. This species was documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Martin et al 1998. 

Sage thrasher Oreoscoptes 

montanus 

BLM-WY Sagebrush, basin prairie shrub, mountain 

foothill shrub and greasewood. Breeding Season: April 1 through August 31. 

Moderate. This species was documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Reynolds 1999. 

Trumpeter swan 

Cygnus buccinator 

BLM-WY; USFS-R4S; WY-NSS2 

Lakes, ponds, rivers. Breeding Season: This species does not breed within or near the proposed project route. 

Low. Limited to migrant habitat use on the FGNRA. 

No. Potential occurrence limited to migrant individuals. 

BLM 2006c; Mitchell 1994; WGFD 2005d. 

White-faced ibis 

Plegadis chihi BLM-WY They occur in wet meadows, marsh edges, and 

reservoir shorelines. Breeding Season: May 1-August 31 

Moderate. This species has been documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; NatureServe 2006. 

Greater sagegrouse Centrocercus urophasianus BLM-WY; USFS-R4S; 

CO-SOC; WY-NSS2 

The sage grouse is a sagebrush obligate species. Lek sites are generally located in open areas such as broad ridges, grassy areas, and disturbed sites, adjacent to suitable nesting habitat. Nesting occurs within sagebrush stands with adequate height and canopy cover, and food source. Breeding Season: February 1 through July 31. 

High. This species has been documented in the vicinity of the proposed project route. 18 leks have been documented within one mile of the proposed project route. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado. 

No. BLM 1990, 2002, 

2006a,b; WYNDD 2005; WGFD 2005, 2005d; CNHP 2006; CDOW 2006; Derby et al. 2006; KDWP 2005; Kingery 1998. 
Table I-1 Analysis of Special Status Species 

I-12

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Columbian sharp-tailed grouse 

Tympanuchus phasianellus columbianus 

BLM-WY Native bunchgrass and shrub-steppe 

communities. In western Idaho, preferred big sagebrush habitats with moderate vegetative cover, high plant species diversity, and high structural diversity; in general selected vegetative communities that were least modified by livestock grazing. Deciduous shrubs are critical for winter food and escape cover. Bunchgrasses and perennial forbs are important components of nesting and broodrearing habitat. Breeding Season: March 1 through July 31. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming. 

Yes. The proposed project route occurs outside of the known geographic range for this species. 

BLM 2002; NatureServe 2006; WYNDD 2005, WGFD 2006a,b. 

Baird's sparrow 

Ammodramus bairdii 

BLM-WY Ungrazed or lightly grazed mixed-grass prairie, 

wet meadows, local pockets of tallgrass prairie, and some disturbed habitats. Prairie with scattered low bushes and matted vegetation. Breeding Season: This species is not known to breed within or near the proposed project route. 

Low. No known occurrence of this species occurs within the vicinity of the proposed project route in Wyoming; however suitable habitat is present. Isolated breeding records of this species in Laramie County, Wyoming. 

Yes. Occurrence would be limited to accidental migrants. 

BLM 2002; Derby et al. 2006; Keinath 2003; NatureServe 2006; Green 2002; WYNDD 2005. 

Reptiles Midget faded rattlesnake 

Crotalus viridis concolor 

BLM-WY; CO-SOC 

This species inhabits rock outcrops in the sagebrush communities. Live young are born in late summer or early fall 

Moderate. This species has been documented along the proposed project route in Wyoming. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Cerovski et al. 2004; Derby et al. 2006; CNHP 2006; CDOW no date, 2006; NatureServe 2006. 

Amphibians Western boreal toad 

Bufo boreas boreas 

CO-E; BLMWY; WYNSS2 This species typically occupies damp conditions in the vicinity of marshes, wet meadows, streams, beaver ponds, kettle ponds, and lakes. 

Breeds in still to slow moving waters. Breeding occurs in May through August depending on elevation. 

Moderate. This species has been documented along the proposed project route in Wyoming. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Cerovski et al. 2004; USFWS 2005; USFS 2005; CDOW no date, 2006; Keinath et al. 2003. 
Table I-1 Analysis of Special Status Species 

I-13

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Northern leopard frog 

Rana pipiens BLM-WY; 

CO-SOC. 

This species inhabits marshes, ponds, beaver ponds, lakes, reservoirs, streams, and irrigation ditches. Breeding occurs in March through midSeptember. 

High. This species has been documented along the proposed project route in Wyoming. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Cerovski et al. 2004; USFS 2005; CDOW no date, 2006. 

Great Basin spadefoot toad 

Spea intermontana 

BLM-WY This species inhabits pinon-juniper woodlands, 

sagebrush, and semi-desert shrubland. This species uses both permanent and temporary water sources for breeding. Breeding occurs in May through July. 

High. This species has been documented along the proposed project route in Wyoming. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Cerovski et al. 2004. 

Spotted frog Rana luteiventris BLM-WY Ponds, sloughs, small streams. 

Breeding occurs between March and May, as winter thaw permits. 

Low. No known occurrence in the vicinity of the proposed project route in Wyoming; however, suitable habitat is present. 

No. BLM 2002, 2006a,b; 

WYNDD 2005; Derby et al. 2006; Cerovski et al. 2004; NatureServe 2006. 

Fish Bluehead sucker 

Catostomus discobolus 

BLM-WY; WYGF-NSS1 

This species is found in a variety of fluvial habitats, ranging from cold, clear trout streams to warm, turbid streams, with moderate-to-fast velocity. This species prefers areas with riffles over a rocky substrate. Spawning occurs in late spring or early summer. 

High. Known occurrence in Hams Fork River, Blacks Fork River, and Green River in Wyoming. 

No. Baxter and Simon 

1970; Lee et al. 1980; Woodling 1985; WYNDD 2005. 

Flannelmouth sucker 

Catostomus latipinnis 

BLM-WY; WYGF-NSS1 

This species inhabits large streams and rivers in all habitat types including riffles, runs, pools, eddies, and backwaters. This species also enters mouths of small tributary streams. Spawning occurs in spring and early summer on riffles with coarse gravel bottoms. 

High. Known occurrence in Hams Fork River, Blacks Fork River, Green River, and Bitter Creek in Wyoming. 

No. USFWS 1993; 

Woodling 1985. 

Leatherside chub 

Gila copei BLM –WY; 

WYGF-NSS1 

Found in pools of clear, cool streams of the Bonneville Basin and the Upper Snake River drainage, including the Bear River (Uinta County). Spawning occurs in late summer. 

Moderate. Potential occurrence in the Green River and Bear Creek in Wyoming. 

No. WYNDD 2005; 

Baxter and Simon 1970. 

Roundtail chub 

Gila robusta BLM-WY; 

WY-NSS1 

This species inhabits pools, eddies, runs, and ruffles in moderate to large rivers. Spawns in spring and early summer. 

Moderate. Known occurrence in Hams Fork and Blacks Fork rivers. 

No. Karp and Tyus 

1990; Woodling 1985; WYNDD 2005. 
Table I-1 Analysis of Special Status Species 

I-14

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Colorado cutthroat trout 

Oncorhynchus clarki pleuriticus 

BLM-WY; USFS-R4S 

Clear mountain streams within the Colorado River Basin (NRG SSP). 

None. Yes. Surveys not 

required by NRG SSP. 

WYNDD 2005. 

Bonneville cutthroat trout 

Oncorhynchus clarki utah 

BLM-WY Clear mountain streams within the Bear River 

Basin (NRG SSP). 

None. Yes. Surveys not 

required by NRG SSP. 

WYNDD 2005. 

Fine-spotted Snake River cutthroat trout 

Oncorhynchus clarki spp. 

BLM-WY Clear fast water within the Snake River Basin 

(NRG SSP). 

None. Yes. Surveys not 

required by NRG SSP. 

WYNDD 2005. 

Plants Laramie columbine 

Aquilegia laramiensis 

BLM -WY Crevices of granite boulders and cliffs. 

Elevation: 6,400-8,000 feet elevation. Flowering period: June through August. 

Moderate. No. Suitable habitat 

for this species is present within the project area. Surveys will be conducted for this species. 

BLM 2002, 2006b. 

Nelson's milkvetch 

Astragalus nelsonianus 

BLM-WY It occupies alkaline, often seleniferous, clay flats, 

shale bluffs and gullies, pebbly slopes, and volcanic cinders. Known occurrences are found primarily in sparsely vegetated sagebrush and cushion plant communities. Elevation: 5,200-7,600 feet. Flowering Period: Late May/August 

High. Potential habitat present. Known from basins and foothills of Carbon, Natrona, and Sweetwater counties, Wyoming, with one population in Colorado. This species has been documented within the project area. 

No. Known occurrences and suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

Spackman et al. 1997; BLM 2002, 2006b; Keinath et al. 2003. 

Trelease's racemose milkvetch 

Astragalus racemosus var. treleasei 

BLM-WY Occurs mainly on outwash flats and fluted 

Badlands slopes derived from shale. Elevation: 6,500-8,200 feet Flowering period: Mid-June through July 

Moderate. No. Suitable habitat 

for this species is present within the project area. Surveys will be conducted for this species. 

Derby et al. 2006; BLM 2002. 

Cedar Rim thistle 

Cirsium aridum BLM -WY Barren, chalky hills, gravelly slopes, and fine 

textured, sandy-shaley draws. Elevation: 6,700–7,200 feet Flowering period: June through August. 

Moderate. Species endemic to Wind River and Green River Basins, Fremont and Sublette Cos., Wyoming. One area of potential habitat within project area based on WYNND model. 

No. Suitable habitat present within the project area. Surveys will be conducted for this species. 

BLM 2002, 2006b; Derby et al. 2006. 
Table I-1 Analysis of Special Status Species 

I-15

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Ownbey's thistle 

Cirsium ownbeyi BLM-WY Sparsely vegetated shaley slopes in juniper, 

sagebrush, and riparian communities. Elevation: 5,500-6,200 feet. Flowering period June-August/July through September. 

Moderate. No. Suitable habitat 

for this species is present within the project area. Known occurrence adjacent to the project area. Surveys will be conducted for this species. 

BLM 2002; Derby et al. 2006; Keinath et al. 2003 

Large-fruited bladderpod 

Lesquerella macrocarpa 

BLM-WY Restricted to the Great Divide and Green River 

basins of Wyoming. It occurs in sparsely vegetated (Atriplex gardneri-Elymus elymoides) 

communities on barren, fine-textured clays and shales, often with gypsum or bentonite, on low hills knolls, and colluvial fans. Elevation: 7,200-7,700 feet. Flowering Period: Mid May through July 

High. This species has been documented within the project area. 

No. Known occurrences and suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

BLM 2002; Keinath et al. 2003; Derby et al. 2006. 

Prostrate bladderpod 

Lesquerella prostrata 

BLM-WY Slopes and rims of whitish to reddish or gray 

limey clays and soft sandstones with a surface layer of fine gravel, or else on limestone. Elevation: 7,200-7,700 feet. Flowering period: Mid April-late June/early June through early July. 

Moderate. No. Suitable habitat 

is present within the project area. 

BLM 2002; Derby et al. 2006. 

Gibbens' beardtongue 

Penstemon gibbensii 

BLM-WY This species is found in sparsely vegetated shale 

or sandy-clay slopes of the Brown's Park Formation. Associated vegetation includes piñonjuniper woodland, sagebrush, or salt desert shrub communities. Elevation: 5,500-7,700 feet. Flowering period: June through September. 

Moderate. This species could occur within potentially suitable habitat along the project route in Sweetwater and Carbon counties, Wyoming. 

No. Suitable habitat present within the project area. Surveys will be conducted for this species. 

BLM 2002, 2006b; Fertig 1994; Derby et al. 2006; Spackman et al. 1997. 

Tufted twinpod 

Physaria condensata 

BLM-WY Sparsely-vegetated shale slopes and ridges. 

Elevation: 6,500-7,000 feet. Flowering period: May-June/June through July. 

High. Suitable habitat present. No. Suitable habitat 

for this species is present within the project area. Known occurrence adjacent to the project area. Surveys will be conducted for this species. 

Keinath et al. 2003, Derby et al. 2006; BLM 2002. 
Table I-1 Analysis of Special Status Species 

I-16

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Persistent sepal yellowcress 

Rorippa calycina BLM -WY Riverbanks and shorelines usually on sandy 

soils near high-water lines. Elevation: 3,660-6,800 feet. Flowering period: May through August. 

High. Potential habitat present. This species has been documented within the project area. 

No. Known occurrences and suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

BLM 2002, 2006b; Keinath et al. 2003, Derby et al. 2006. 

Laramie false sagebrush 

Sphaeromeria symplex 

BLM -WY Cushion plant communities on rocky limestone 

ridges and gentle slopes. Elevation: 7,500–8,600 feet Flowering period: May through August. 

Moderate. No. Suitable habitat 

for this species is present within the project area. Surveys will be conducted for this species. 

BLM 2002, 2006b; Keinath et al. 2003; Derby et al. 2006. 

Green River greenthread 

Thelesperma caespitosum 

BLM -WY; USFS- R4S 

White shale slopes and ridges of Green River Formation. Elevation: 6,300 feet. Flowering period: May through June 

High. This species has been documented within the project corridor. 

No. Suitable habitat present within the project area. Surveys will be conducted for this species. 

BLM 2002, 2006a; WYNDD 2005; Derby et al. 2006; Goodrich 2006. 

Meadow pussytoes 

Antennaria arcuata 

BLM-WY Moist meadows, seeps, or springs surrounded 

by sagebrush grassland. Elevation: 4,950-7,900 feet. Flowering period July through September. 

None. Yes. Known 

occurrences in Wyoming are in Sweetwater River Valley, southern Wind River Range, and northern Green River Basin which are outside of the project area. 

BLM 2002; Derby et al. 2006. 

Mystery wormwood 

Artemisia biennis var. diffusa 

BLM-WY Clay flats and playas. 

Elevation: 6,500 feet. Flowering period: August-September. 

None. Yes. BLM (RS) 

direction: No surveys required. 

Derby et al. 2006; BLM 2002. 

Starveling milkvetch 

Astragalus jejunus var. jejunus 

BLM-WY Dry, barren ridges and bluffs of shale, 

sandstone, clay, or cobblestones. Elevation: 6,000-7,100 feet. Flowering period: May through July. 

None. Yes. BLM (RS) 

direction: no surveys required for this species. 

Derby et al. 2006; BLM 2002. 
Table I-1 Analysis of Special Status Species 

I-17

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Precocious milkvetch 

Astragalus proimanthus 

BLM-WY Cushion plant communities on rocky, clay soils 

mixed with shale on summits and slopes of white shale hills. Elevation: 6,800-7,200 feet. Flowering period: May through June/June through July. 

None. Yes. Species is 

narrowly endemic to the bluffs of Henry’s Fork River and vicinity of McKinnon in the southern Green River Basin (an area comprising <320 acres). This area is outside of the project area. 

Derby et al. 2006; BLM 2002. 

Small rockcress 

Boechera pusilla BLM-WY Cracks and crevices in sparsely vegetated 

granite-pegmatite outcrops surrounded by sagebrush grassland. Elevation: 8,000-8,100 feet. Flowering period: May through June/June through July. 

None. Yes. Endemic to the 

south Wind River Range, Fremont County, Wyoming (outside project area). 

Derby et al. 2006; BLM 2002. 

Wyoming Tansymustard 

Descurainia torulosa 

BLM-WY Sparsely vegetated sandy slopes at base of 

cliffs of volcanic breccia or sandstone. Elevation: 8,300-10,000 feet. Flowering period: July through September. 

None. Yes. Elevational 

range of this species exceeds those present within the project area. 

Keinath et al. 2003; BLM 2002; Derby et al. 2006. 

Weber's scarlet-gilia 

Ipomopsis aggregate ssp. Weberi 

BLM-WY; FSR2S Openings in coniferous forests and scrub oak woodlands. 

Elevation: 8,500-9,500 feet. Flowering period: June through August 

None. Yes. Elevational 

range of this species exceeds those present within the project area. 

Keinath et al. 2003; BLM 2002; Derby et al. 2006. 

Entire-leaved peppergrass 

Lepidium integrifolium var. integrifolium 

BLM-WY Wet meadows associated with low-elevation 

riparian habitat of foothills and valley bottoms, at margins where salt accumulates. Elevation: 6,170-6,790 feet. Flowering period: Mid June-early July/late June through August. 

None. Yes. In Wyoming, 

known only from the southern Overthrust Belt in Lincoln and Uinta counties, in the Bear River watershed (Outside of the project area) 

Derby et al. 2006; BLM 2002. 
Table I-1 Analysis of Special Status Species 

I-18

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Western bladderpod 

Lesquerella multiceps 

BLM-WY Dry gravelly limestone ridges and slopes with 

thin pockets of soil. Elevation: 8,600 feet. Flowering period: May through July/June through early August. 

None. Yes. In Wyoming, 

known only from the Overthrust Belt in Lincoln County from montane to subalpine elevations, which is outside of the project area. 

Derby et al. 2006; BLM 2002. 

Stemless beardtongue 

Penstemon acaulis var. acaulis 

BLM-WY; USFS-R4S 

Cushion plant communities on semi-barren rocky ridges and slopes. Elevation: 5,900-7,200 feet. Flowering period: Mid May-late June/mid Junemid July. 

None. Yes. Narrow 

endemic in southwestern Sweetwater County, known from only 3 occurrences in the vicinity of McKinnon, Wyoming (outside project area). 

Fertig 1994; BLM 2002; Spackman et al. 1997; Derby et al. 2006. 

Opal phlox Phlox opalensis BLM-WY Clay slopes and ridges. 

 Elevation: 6,700-6,900 feet. Flowering period: May through June. 

None. Yes. BLM (RS) 

direction: No surveys required for this species. 

Derby et al. 2006. 

Beaver Rim phlox 

Phlox pungens BLY-WY Sparsely vegetated slopes on sandstone, 

siltstone, or limestone substrates. Elevation: 6,000-7,400 feet. Flowering period: May through June. 

None. Yes. This species is 

endemic to Wind River Basin (Freemont County, Wyoming), which is outside of the project area 

Derby et al. 2006; BLM 2002. 

Dorn’s twinpod 

Physaria dornii BLM-WY Dry, calcareous-shaley slopes and ridges with 

mountain mahogany and rabbitbrush. Elevation: 6,500-7,200 feet. Flowering period: May-June/June-July. 

None. Yes. Endemic to 

Rock Creek Ridge area (outside project area). 

Keinath et al. 2003; BLM 2002; Derby et al. 2006. 

Uinta greenthread 

Thlelsperma pubescens 

BLM-WY Sparsely vegetated benches and ridges on 

coarse, cobbly soils of Bishop Conglomerate. Elevation: 8,100-8,900 feet. Flowering period: July through August. 

None. Yes. BLM (RS) 

direction: No surveys required for this species. 

Derby et al. 2006; BLM 2002. 
Table I-1 Analysis of Special Status Species 

I-19

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Cedar Mountain Easter Daisy 

Townsendia microcephala 

BLM-WY Rocky slopes of Bishop Conglomerate. 

Elevation: 8,500 feet. Flowering period: May through July. 

None. Yes. Elevational 

range of this species exceeds those present within the project area. 

Derby et al. 2006; BLM 2002. 

USFS Mammals North American wolverine 

Gulo gulo USFS-R4S This species is found in tundra, boreal forests, 

and coniferous forests of western mountains. Habitat includes large, sparsely inhabited areas with an adequate prey base. Young born between January and April. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming. 

Yes. The proposed project route does not occur within the geographic range of this species. 

NatureServe 2006; USFS 2006. 

Birds Common loon Gavia immer USFS-R4S; 

WY-NSS1 

Lakes above 6,000 feet. Lower elevations during migration. Nests next to water, frequently on an island. Breeding Season: This species does not breed within the vicinity of the proposed project route. 

Low. This species was documented in the vicinity of the proposed project route in Wyoming. 

Yes. Occurrence would be limited to migrants. 

Cerovski et al. 2004; McIntyre et al. 1997; WYNND 2005; WGFD 2005d. 

Cassin's sparrow 

Aimophila cassini USFS-R2S Open grassland and short-grass plains with 

scattered bushes or shrubs, sagebrush, mesquite or yucca. May nest in grasses, in patches of ground cactus, at the base of shrubs, or in the lower branches of bushes or cacti. Breeding Season: May 1 through July 15 

Moderate. This species has been documented on all Breeding Bird Survey routes within the PNG. 

No. Derby et al. 2006; 

USFS 2005; CNHP 2006; Dunning et al. 1999; Kingery 1998. 

McCown’s longspur 

Calcarius mccownii 

USFS-R2S Sparsely vegetated shortgrass prairie. Within 

Colorado, this species primarily breeds in northern Weld and northeastern Larimer counties. Breeding Season: March 15 through October 15 

High. This species has been documented on all Breeding Bird Survey and along the proposed project route routes within the PNG. 

No. NatureServe 2006; 

USFS 2005; CNHP 2006; With 1944; Derby et al 2006; Kingery 1998. 

Chestnutcollard longspur 

Calcarius ornatus 

USFS-R2S Medium height grass, especially meadows 

around pools. Breeding Season: May 1 through August 15 

Moderate. This species has been documented on the PNG on four of the five Breeding Bird Survey routes 

No. CNHP 2006; USFS 

2005; Derby et al. 2006; Kingery 1998. 
Table I-1 Analysis of Special Status Species 

I-20

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Northern harrier 

Circus cyaneus USFS-R2S This species inhabits open fields, native and 

non-native grasslands, agricultural lands, and marshes. Nest sites occur on the dry or elevated ground in a variety of habitats from grasslands to marshes, with abundant ground cover such as tall reeds, cattails, shrubs, and grasses. For breeding and hunting in these habitats, the birds select areas with dense cover (e.g., swales, draws, fencerows, and canal banks). Breeding season February 1 through July 31. 

Low. Common year- round residents on the PNG. Not known to nest on the PNG. 

No. CNHP 2006; CDOW 

2006; Derby et al. 2006; USFS 2005; NatureServe 2006; Kingery 1998. 

Grasshopper sparrow 

Ammodramus savannarum 

USFS-R2S “Mid-grass” prairie, tall-grass prairie, hay 

meadows, and open savanna. Known to nest throughout the eastern plains of Colorado with highest concentrations in Phillips, Sedgwick, Logan, Washington, and northern Yuma counties; along the Arkansas River in Kiowa, Prowers, and Bent counties; and on the Comanche National Grassland. Breeding Season: April 15 through September 15. 

Moderate. Fairly common summer resident on the PNG. This species has been documented on all Breeding Bird Survey routes on the PNG. 

No. CNHP 2006; Derby 

et al. 2006; USFS 2005; Kingery 1998. 

Black tern Chlidonias niger USFS-R2S; 

KS-SINC. 

Ponds, lakes, reservoirs, and marshes. The Kansas status and range of the Black Tern is statewide during migration; nesting has been confirmed at Cheyenne Bottoms and Quivira National Wildlife Refuges. Breeding Season: June 1 through August 15. 

Moderate. Known to breed in isolated patches in Colorado. Fairly common summer resident with limited nesting habitat on the PNG. No known occurrence in the vicinity of the proposed project route in Kansas; however, potential breeding habitat is present. 

No. USFS 2005; CNHP 

2006; Derby et al 2006; KDWP 2005; KSNHD 2005; Kingery 1998. 

Boreal owl Aegolius 

funereus 

USFS-R4S Subalpine forests characterized by subalpine fir 

and Engelmann spruce requires large cavities for nesting. Breading Season: April 15 through August 15. 

None. This species and its required habitat are not found within the proposed project vicinity in Wyoming. 

Yes. USFS 2006. 
Table I-1 Analysis of Special Status Species 

I-21

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Flammulated owl 

Otus flammeoulus 

USFS-R4S Ponderosa pine or Douglas fir forests in the 

Ashley National Forest. Stream pediment, stream canyon, glacial canyon, limestone plateau, and limestone hill landtype associations make up nearly all the suitable habitat for this species in the Ashley National Forest. Breeding Season: May 1 through October 1. 

None. This species and its required habitat are not found within the proposed project vicinity in Wyoming. 

Yes. USFS 2006; 

NatureServe 2006. 

Great gray owl 

Strix nebulosa USFS-R4S Conifer or conifer/hardwood forest. Occurs in 

mixed conifer on the Ashley National Forest. Uses older stick nests constructed by other species. Breeding Season: May 1 through August 15. 

None. This species and its required habitat are not found within the proposed project vicinity in Wyoming. 

Yes USFS 2006; 

NatureServe 2006. 

Three-toed woodpecker 

Picoides tridactylus 

USFS-R4S Coniferous or mixed confer forests. Occurs in 

Douglas fir, spruce/fir, and mixed conifer on the Ashley National Forest. Breeding Season: May1 through July 31 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming. 

Yes. The proposed project route does not occur within the geographic range of this species. 

USFS 2006; NatureServe 2006. 

Amphibians Columbia spotted frog 

Rana luteiuentris USFS-R4S This species inhabits ponds, sloughs, and small 

streams in the foothills and montane zones. Deposits eggs in late May through June. 

None. Yes. This is not 

known to occur in the Green River portion of the Ashley NF. 

Cerovski et al. 2004 

Plants Dwarf milkweed 

Asclepias uncialis 

USFS-R2S Grassy hills, escarpments, and mesas in semiarid shortgrass prairie. 

Elevation: 4,000-6,500 feet Flowering period: Late April-May/ June-early July. 

Moderate. Surveys required by USFS. No surveys required by the BLM. 

No. Suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

NRG 2006; Derby et al. 2006. 

Prairie moonwort 

Botrychium campestre 

USFS-R2S Dry, gravelly hillsides, often occurring with little 

bluestem. Elevation: 3,700-10,800 feet in Colorado. Flowering period: Leaves appear in early spring, spores produced from spring-July. 

Moderate No. Suitable habitat 

present on PNG. 

NRG 2006; Derby et al. 2006. 
Table I-1 Analysis of Special Status Species 

I-22

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Wyoming feverfew 

Parthenium alpinum 

Former 

USFS-R2S 

This species is a mat-forming perennial herb that occurs along stony ridges and low hills, often dominated by cushion plant communities. Elevation: 5,400-5,800 feet. Flowering period: May. 

High. It is known in Colorado from occurrences in Weld County. 

No. Suitable habitat for this species is present within the project area. Surveys will be conducted for this species. 

Derby et al. 2006. 

Graham columbine 

Aquilegia grahamii 

USFS- R4S Sandy drip lines in hanging gardens of shaded 

canyons in Weber sandstone. Elevation: 7,600 feet. Flowering period: June through July. 

None. Yes. No suitable 

habitat found within the project area. 

Atwood et al. 1991. 

Petiolate wormwood 

Artemisia campestris petiolata 

USFS- R4S Ponderosa pine-lodgepole pine – 

Arctostaphylos communities. Elevation: 8,900 feet. Flowering period: July through August. 

None. Yes. Elevational 

range of this species exceeds those present within the project area. 

Atwood et al. 1991. 

Dainty moonwort 

Botrychium crenulatum 

USFS- R4S This species is found in marshy areas and 

adjacent to springs. Elevation: 8,000 feet. Fronds mature June through July. 

None. Yes. Known from 

Cache, Juab, Summit, and Wasatch counties in Utah (outside the project area). 

Atwood et al. 1991. 

Slender moonwort 

Botrychium lineare 

USFS- R4S This species is found in meadows, woodlands, 

and on shelves on limestone cliffs. Elevation: 4,900-6,600 feet. Spores mature late June through July. 

None. Yes. Known from 

Salt Lake County in Utah (outside the project area). 

Atwood et al. 1991. 

sandhill goosefoot 

Chenopodium cycloides 

USFS-R2S Sandy soils on dunes and stabilized sand in 

blowouts. Elevation: 4,000-5,500 feet in Colorado. Flowering period: July through August/August through September. 

None. Yes. No suitable 

habitat found within the project area. 

NRG 2006; Derby et al. 2006. 

Brownie ladyslipper 

Cypripedium fasciculatum 

USFS- R4S This species is found growing in the duff layer of 

spruce-fir and lodgepole pine forests. Elevation: 8,000-9,000 feet. Flowering period: June through July. 

None. Yes. Elevational 

range of this species exceeds those present within the project area. 

Atwood et al. 1991. 
Table I-1 Analysis of Special Status Species 

I-23

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Untermann daisy 

Erigeron untermannii 

USFS- R4S This species is found in P-J, mountain 

mahogany, limber and bristlecone pine, and sagebrush communities on calcareous shales and sandstones. Elevation: 7,000-9,400 feet. Flowering period: May through June. 

None. Yes. Endemic to 

Utah in Duchesne County (outside the project area). 

Atwood et al. 1991. 

Goodrich stickleaf 

Mentzelia goodrichii 

USFS- R4S This species is found on steep, white, marly 

calciferous shales of the Green River Formation. Elevation: 8,100-8,800 feet. Flowering period: July through August. 

None. Yes. Endemic to 

southern Duchesne County, Utah (outside the project area). 

Atwood et al. 1991. 

Arctic poppy Papaver 

radicatum var. pygmaeum 

USFS- R4S This species is found in rock outcrops in alpine 

tundra communities. Elevation: 11,100-12,800 feet. Flowering period: July through August. 

None. Yes. Elevational 

range of this species exceeds those present within the project area. 

Atwood et al. 1991. 

State Status Mammals Northern pocket gopher 

Thomomys talpoides 

CO-SOC Found in different habitat types including 

agricultural and pasture lands, semidesert shrublands, and grasslands at lower elevations upwards into alpine tundra. This species is common in a variety of habitats above about 1,525 m (5,000 feet) in elevation. Young born between March and mid-June. 

Low. No known occurrence of this species within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

No. CNHP 2006; CDOW 

no date, 2006; Derby et al. 2006; NatureServe 2006. 

Franklin’s ground squirrel 

Spermophilus franklinii 

KS-SINC Associated with the zone where tallgrass prairie 

and deciduous forest come into contact. It prefers the sheltered cover of dense grasses, weedy fields and wastelands, and shrubby forest edges. Young are born in May or June. 

Low. No known occurrence within the vicinity of the proposed project route in Kansas; however, limited suitable habitat is present. 

No. KDWP 2005; 

KSNHD 2005; NatureServe 2006. 

Long-legged myotis 

Myotis volans WY-NSS2 Found in conifer and deciduous forests. Roosts 

include tree and rock crevices, snags and buildings. Pups born between May and August. 

Moderate. This species has been documented along the proposed project route in Wyoming. 

No. WYNDD 2005; 

Derby et al. 2006; Cerovski et al. 2004; WGFD 2005c; Ellison 2003. 
Table I-1 Analysis of Special Status Species 

I-24

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Pallid bat Antrozous 

pallidus 

WY-NSS2; KS-SINC 

Generally found in desert and grassland habitats. Roosts in small crevices in buildings, rocks and other open places. Pups born between May and July. 

Moderate. This species has been documented along the proposed project route in Wyoming. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

No. WYNDD 2005; 

Derby et al. 2006; Cerovski et al. 2004; KDWP 2005; KSNHD 2005; WGFD 2005c; KSNHD 2005; Ellison 2003. 

Eastern spotted skunk 

Spilogale putorius 

KS-T w/CH This species prefer forest edge and upland 

grassland prairie, especially if rock outcrops and shrubs are present. Their dens are located below ground in grassy banks, rocky crevices or along fence rows, as well as above ground in hay stacks, woodpiles, brushy heaps, hollow logs, and abandoned buildings or outbuildings. Young are born in May or June. 

Moderate. The species is known to occur along the proposed project route in Kansas. Designated critical habitat occurs in three counties crossed by the proposed route. 

No. KDWP 2005, 2006; 

KSNHD 2005. 

Northern myotis 

Myotis septentrionalis 

WY-NSS2 The northern myotis primarily inhabits forested 

regions. In Wyoming, it can be found in wooded riparian zones in badlands and prairies to higher elevation conifer and deciduous woodlands. During summer, it roosts in crevices and cavities of trees, under loose bark, and occasionally in buildings. During winter, it usually hibernates in caves and abandoned mines. This species does not reproduce within or near the proposed project route. 

None. This species and its required habitat are not found within the proposed project vicinity in Wyoming. 

Yes. The proposed project route does not occur within the geographic range of this species. 

WGFD 2005b,c; WYNDD 2005; Derby et al. 2006; Cervoski et al 2004. 

Kit fox Vulpes macrotis CO-SOC This species inhabits semidesert shrubland and 

margins of pinon-juniper woodlands, saltbrush, shadscale, sagebrush, and greasewood are commonly found. Appears to rely heavily on lagomorphs as a staple diet but also will feed on ground-nesting birds, reptiles, and insects. Only one small population is known to occur in Colorado, near Delta, Colorado. Pups are born in February or March. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

Yes. The proposed project route does not occur within the geographic range of this species. 

CNHP 2006; Derby et al. 2006; CDOW no date, 2005. 
Table I-1 Analysis of Special Status Species 

I-25

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Birds Snowy plover Charadrius 

alexandrinus 

KS-T; COSOC This species inhabits open alkaline flats, mudflats, sandy shorelines, sandbars with little 

vegetation along rivers, lakes, ponds, and marshlands. Nesting often occurs on white saline flats. Breeding season: May 1 through August 15. 

Low. No known occurrences in the proposed project vicinity in Colorado or Kansas; however, suitable breeding habitat is present. 

No. CNHP 2006; CDOW 

2006; Derby et al. 2006; KDWP 2005; Kingery 1998. 

Black Rail Laterallus 

jamaicensis 

KS-SINC Wet meadows or meadows near marshes. 

While it may use cattails and similar habitats, shallow wetlands with short dense vegetation is preferred. The major threat to the Black Rail is the disappearance of small shallow wetlands. Breeding Season: April 1 through May 31. 

Low. No known occurrences within the vicinity of the proposed project route in Kansas; however, suitable breeding habitat is present. 

No. KDWP 2005; 

KSNHD 2005; Eddleman 1994. 

Short-eared owl 

Asio flammeus KS-SINC Short-eared owls nest in prairies, marshes, 

fallow fields, and grain fields. Nests are often in wheat fields or alfalfa fields. They are shallow scrapes lined with vegetation and feathers and are often placed at the base of a tall weed. These nests are often destroyed either by farming operations or by predators. Breeding Season: This species is not known to breed in the proposed project vicinity. 

Moderate. No known occurrences within the vicinity of the proposed project route; however, suitable wintering habitat is present. It is a transient and an irregular or local winter resident throughout Kansas. Most records of occurrence are from October 16 to April 15, but a few may occur at any time in proper habitat. 

No. KDWP 2005; 

KSNHD 2005; Kingery 1998. 
Table I-1 Analysis of Special Status Species 

I-26

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Bobolink Dolichonyx 

oryzivorus 

KS-SINC The Bobolink prefers tall grasslands such as 

wet meadows, hayfields, and moist tallgrass prairie. Migrants frequently visit alfalfa fields. They nest on the ground in a shallow depression made of grasses and weed stems. Breeding Season: May 1 through July 31. 

Low. No known occurrence within the vicinity of the proposed project route in Kansas; however, suitable breeding habitat is present. This species casually occurs in western Kansas, where it may possibly breed very locally. Nesting has been confirmed from Barton, Cloud, and Stafford counties. 

No. KDWP 2005; 

KSNHD 2005; Kingery 1998; Martin and Gavin 1995. 

Plains sharptailed grouse Tympanuchus phasianellus 

jamesii 

CO-E Occurs in Gambel oak and other shrublands 

lacking conifers. Croplands and riparian areas also are used, especially in fall and winter. Leks are located in wet meadows, ridges and knolls, or recently burned areas. Rare to uncommon resident in Douglas County. Breeding Season: March 1 through July 31. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming. 

Yes. The proposed project route occurs outside of the known geographic range for this species. 

CDOW no date, 2005; CNHP 2006; Mitchell et al. 2002; Kingery 1998. 

Greater sandhill crane 

Grus Canadensis tabida 

CO-SOC Migrants occur on mudflats around reservoirs, 

in moist meadows, and in agricultural areas. Breeding birds are found in parks with grassy hummocks and watercourses, beaver ponds, and natural ponds lined with willows or aspens. In Colorado, abundant spring and fall migrant in the San Luis Valley. Abundant in fall Routte County. Migrant, primarily in spring, in western valleys from Montrose County northward and east to Eagle and Gunnison counties. Breeding Season: May 1 through July 31. 

Low. Occurrence would be limited to accidental migrants in Colorado. 

Yes. Known distribution outside the vicinity of proposed project route in Colorado. Occurrence would be limited to accidental migrants. 

CNHP 2006; CDOW no date, 2006; Derby et al. 2006; Kingery 1998. 

Whip-poor-will Camprimulgus 

vociferus 

KS-SINC Woodlands. The Whip-poor-will is a locally 

common transient and summer resident in the eastern part of the state. They have been recorded to occur from April 3 to October 14. Breeding Season: June 1 through July 31. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

Yes. Breeding is limited to the eastern part of Kansas. Occurrence would be limited to accidental migrants. 

KDWP 2005; KSNHD 2005; Kingery 1998. 
Table I-1 Analysis of Special Status Species 

I-27

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Chihuahuan raven 

Corvus cryptoleucus 

KS-SINC Arid areas, particularly desert and scrubby 

grasslands. In Kansas, their breeding range formerly encompassed the western part of Kansas along the Colorado border eastward to as far as Ford, Kearny, Finney, and Gray counties. Breeding Season: April 1 through July 31. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

Yes. Breeding is limited to the eastern part of Kansas. Occurrence would be limited to accidental migrants. 

KDWP 2005; KSNHD 2005; Kingery 1998; Bernarz and Raitt 2002. 

Curve-billed Thrasher 

Toxostoma curvirostre 

KS-SINC During the Summer, restricted to arid parts of 

the southwest, usually in sandsage grasslands and usually near a cholla cactus. In the winter, they wander and have been reported in barnyards, windbreaks, cemeteries, and brushy ravines. Breeding Season: May 1 through July 31. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

Yes. KDWP 2005; 

KSNHD 2005; Kingery 1998; Tweit 1996. 

Cerulean warbler 

Dendroica cerulean 

KS-SINC The Cerulean Warbler can be found in mature, 

deciduous trees along rivers. Breeding Season: This species is not known to breed within the vicinity of the proposed project route. 

Low. No known occurrence within the vicinity of the proposed project route; however, suitable foraging habitat is present. In the western part of Kansas, they might be found in shelter belts, along rivers, or in towns mainly in the canopies of trees. 

Yes. Occurrence would be limited to accidental migrants. 

KDWP 2005; KSNHD 2005; Kingery 1998; Hammel 2000. 

Yellowthroated warbler 

Dendroica dominica 

KS-SINC The Yellow-throated Warbler is confined mostly 

to riverine forests, particularly in southeastern Kansas. It prefers tall sycamores for nesting and foraging. Breeding Season: This species does not breed within the vicinity of the proposed project route. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

Yes. Occurrence would be limited to accidental migrants. 

KDWP 2005; KSNHD 2005; Kingery 1998; Hall 1996. 

Reptiles Glossy snake Arizona elegans KS-SINC Dry, open, sandy areas. The range of the 

Glossy Snake is in western Kansas, southwest of a line from Cheyenne, Rice, and Harvey counties. Eggs hatch in late summer or early fall. Not all adult females are reproductive every year; perhaps female reproduction is biennial at most. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

No. KDWP 2005; 

KSNHD 2005; NatureServe 2006. 
Table I-1 Analysis of Special Status Species 

I-28

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Western hognose snake 

Heterodon nasicus 

KS-SINC Grassland or sand prairie in the western twothirds of Kansas reaching its peak abundance 

on the High Plains. Lays clutch in June through July. Females may oviposit in alternate years. Sexually mature in second year. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

No. KDWP 2005; 

KSNHD 2005; NatureServe 2006. 

Common garter snake 

Thamnophis sirtalis 

CO-SOC In Colorado, the common garter snake inhabits 

marshes, ponds, and the edges of streams. For the most part, it is restricted to aquatic, wetland, and riparian habitats along the floodplains of streams. Occurs in northeastern Colorado along the South Platte River and its tributaries at elevations below 6,000 feet (1,830 m) and in the North Fork Republican River drainage in Yuma County at about 3,500–3,600 feet (1,065–1,100 m). Gives birth in July or August. Sexually mature in 1-2 years. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

No. Derby et al. 2006; 

CNHP 2006; CDOW no date, 2006; NatureServe 2006. 

Eastern hognose snake 

Heterodon platirhinos 

KS-SINC Forested areas of eastern Kansas to the open 

prairies along the Colorado border. It prefers sandy areas and is most common along valleys of rivers and in the eastern tier of counties. Most of Kansas is not optimal habitat for this snake and populations of this species in Kansas are probably somewhat isolated. Lays clutch in May-August. Eggs hatch in 39-65 days. Usually sexually mature in 2nd year. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

No. KDWP 2005; 

KSNHD 2005; NatureServe 2006. 

Yellow mud turtle 

Kinosternon flavescens 

CO-SOC Typical habitat in Colorado includes permanent 

and intermittent streams, permanent ponds, isolated temporary ponds and rain pools far from permanent water, irrigation ditches, soggy fields, and the surrounding grasslands and sandhills. Occurs in eastern Colorado in the Republican, Arkansas, and Cimarron River drainages at elevations below 5,000 feet (1,525 m). Known to occur in southeastern Colorado at about 3,800–5,000 feet (1,160–1,525 m). Young are born early-June to mid-July. 

Moderate. This species has been documented along the proposed project route in Colorado. 

No. Derby et al. 2006; 

CNHP 2006; CDOW no date, 2006; NatureServe 2006. 
Table I-1 Analysis of Special Status Species 

I-29

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Amphibians Northern cricket frog 

Aeris crepitans CO-SOC In Colorado, the northern cricket frog occurs 

along the sunny, muddy, or marshy gently sloping edges of permanent or semi-permanent ponds, reservoirs, and streams, and along irrigation ditches, in pastures, and in sand-hill country. It is known from the North Fork and South Fork of the Republican River in Yuma County (about 3,500–3,600 feet [1,070–1,100 m]) and perhaps also from the South Platte River drainage in Weld and Morgan counties. Lays clutch of up to a few hundred eggs in spring or summer. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

No. Derby et al. 2006; 

CNHP 2006; CDOW no date, 2006; NatureServe 2006. 

Plains leopard frog 

Rana blairi CO-SOC The plains leopard frog inhabits the margins of 

streams, natural and artificial ponds, reservoirs, creek pools, irrigation ditches, and other bodies 

of water in plains grassland, sandhills, stream valleys, or canyon bottoms. Occurs in the Great Plains portion of the Arkansas River drainage in southeastern Colorado and in the Republican River drainage in northeastern Colorado at elevations principally below 5,000 feet (1,525 m) but reaching 6,000 feet (1,830 m) in the southwestern portions of Las Animas and Pueblo counties. Clutch of up to a few thousand eggs in spring, summer, or early fall, often after heavy rains. Larvae from early clutches metamorphose in summer; those from late clutches may overwinter and metamorphose the following spring. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

No. Derby et al. 2006; 

CNHP 2006; CDOW no date, 2006; NatureServe 2006. 

Fish Plains minnow 

Hybognathus placitus 

CO-E; KSSINC This species is most commonly associated with shallow areas in intermittent and perennial 

streams. They are able to tolerate variable habitat conditions including dewatered reaches. Spawn May through July. 

Moderate to high. Potential occurrence in the South Platte and Republican rivers in Colorado and Republican River in Kansas. 

No Woodling 1985. 
Table I-1 Analysis of Special Status Species 

I-30

Common 

Name Scientific Name Status1,2 Habitat Association Potential for Occurrence3 

Eliminate from 

Detailed Analysis Reference 

Brassy minnow 

Hybognathus hankinsoni 

CO-T; KSSINC This species occurs in a variety of habitats including shallow streams and pools. Spawn in 

the spring. 

Moderate to high. Potential occurrence in the South Platte, Republican, and Arikaree rivers in Colorado and Republican River in Kansas. 

No. Woodling 1985. 

Orangethroat darter 

Etheostoma spectable 

CO SOC This species is found in shallow riffles or runs 

over sand-gravel substrates. Spawning probably occurs in March through May. 

Moderate. Known occurrence in the North Fork Republican River and Chief Creek. 

No. Swigle 2006; 

Woodling 1985. 

Stonecat Noturus flavus CO SOC This species is found in swift portions of riffles 

and runs near woody debris, cobbles, or sandgravel substrates. Spawns in June through 

August. 

Low. Known occurrence in the Republican River drainage. 

No Swigle 2006; 

Woodling 1985. 

Suckermouth minnow 

Phenacobius mirabalis 

CO-E Species is usually found in riffle areas of warm 

prairie streams of all sizes. Spawning suspected to occur in April through August. 

Moderate. Potential occurrence in the South Platte and Republican rivers. 

No. Woodling 1985. 

Arkansas River speckled cub 

Macrhybopsis tetranema 

KS-E This species prefers shallow channels of 

permanently flowing streams with clean fine sand. 

None. Present distribution restricted to lower portions of Arkansas River basin in Kansas. 

Yes. KDWP website. 

Flathead chub Platygobio 

gracilis 

KS-T This species occurs from the Rio Grande to the 

Arctic Circle in small creeks and the largest rivers that have turbid fluctuating water levels and unstable sand bottoms. This species relies on flood flows to spawn successfully. Spawning occurs after water levels have subsided after peak flows, when water temperatures are warmer and substrate is more stable. Spawning period: March 15 through June 15. 

None. In Colorado, existing populations occur in the Arkansas River Basin. Occurrence in Kansas restricted to the Republican and Cimarron rivers. 

Yes. GPNC 2005b; 

KWPD website. 

Invertebrates Cylindrical papershell 

Anodontoides ferussacianus 

KS-SINC These mussels can occur in impoundments and 

streams and can utilize a wide range of substrates from silt to rubble. In Kansas, known 

only from the Smoky Hill River. They may occur in the lower Republican and lower Solomon rivers. 

Moderate. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is crossed. 

No. KDWP 2005; 

KSNHD 2005. 

Wabash pigtoe mussel 

Fusconaia flava KS-SINC This mussel is an obligate riverine species that 

prefers gravel substrates and moderate currents. Fish hosts include crappies and bluegill. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Yes. The proposed project route occurs outside of the known geographic range for this species. 

KDWP 2005; KSNHD 2005. 
1Status Definitions: 

FE= Federal Endangered FT= Federal Threatened FTw/CH= Federal Threatened with Critical Habitat FC= Federal Candidate CO-E= Colorado Endangered CO-T= Colorado Threatened CO-SOC= Colorado Species of Concern KS-E= Kansas Endangered 

2Ashley National Forest (USFS-R4S) is only analyzing BLM Wyoming sensitive species for this project. 3Species occurrence analyzed for states where they have status. 

KS-T= Kansas Threatened KS-T w/CH= Kansas Threatened with Critical Habitat KS-SINC= Kansas Species in Need of Conservation WY-NSS1= Wyoming Critically Imperiled Species WY-NSS2= Wyoming Imperiled Species BLM-WY = Wyoming BLM sensitive. USFS-R2S = USFS Region 2/Pawnee National Grassland sensitive species USFS-R4S = USFS Region 4/Ashley National Forest sensitive species PNG- Pawnee National Grassland 

I-31
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-32

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Federal Mammals Black-footed ferret 

Mustela nigripes 

FE; USFSR4S; CO-E; WY-NSS1; KS-E 

Low. Historic occurrence within the vicinity of the proposed project route. Prairie dog towns in WY counties 

Low. Historic occurrence within the vicinity of the proposed project route. Prairie dog towns in Morgan, Washington, and Weld counties, Colorado. 

Low. Historic occurrence within the vicinity of the proposed project route; no known occurrence in Kansas since 1957. 

Preble's meadow jumping mouse 

Zapus hudsonius preblei 

FT; CO-T Moderate. This species has been 

documented along the proposed project route. Riparian habitats in Albany and Laramie counties Wyoming. Designated critical habitat occurs outside of the proposed project vicinity. 

Moderate. This species has been documented along the proposed project route. Riparian habitats in Morgan and Weld counties, Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Birds Yellow-billed cuckoo 

Coccyzus americanus 

FC; BLM-WY; WY-NSS2; USFS-R4S 

Low. This species has been documented within the vicinity of proposed project route in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Whooping crane 

Grus americana FE; CO-E; 

KS-E 

Low. Affected by water depletions to the Platte River in Wyoming. 

Low. Occurrence of this species along the proposed project route would be limited to migrating individuals from the ArkansasWood Buffalo population in eastern Colorado and Kansas. Affected by water depletions to the Platte River in Colorado. 

Low. Occurrence of this species along the proposed project route would be limited to migrating individuals from the ArkansasWood Buffalo population in Kansas. Also affected by proposed project activities occurring during migration in Barton, McPherson, Rice, Russell, Sheridan, and Trego County, Kansas. 

Interior least tern 

Sterna antillarum athalassos 

FE; KS-E; CO-E 

None. Affected by water depletions to the Platte River in Wyoming and Colorado 

Low. In Colorado: Adobe Creek and Nee Noshe Reservoirs, Kiowa Co., and Horse Creek Reservoir, Otero Co. Affected by water depletions to the Platte River in Wyoming and Colorado 

None. In Kansas: Quivira National Wildlife Refuge (Stafford Co.) and on Cimarron River in Meade Co.; none documented on Arkansas River or Missouri River in Kansas. Affected by proposed project activities occurring during migration in Barton and Rice County, Kansas. 

Piping plover Charadrius 

melodus circumcinctus 

FT; CO-T; KS-T 

Low. Affected by water depletions to the Platte River in Wyoming. 

Low. Current breeding range occurs along the Platte River, the Arkansas River, reservoirs in eastern Colorado. Affected by water depletions to the Platte River Colorado. 

Low. Affected by proposed project activities occurring during migration in Barton and Rice County, Kansas. 

Lesser prairie chicken 

Tympanuchus pallidicinctus 

FC; CO-T None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado. 

Low. No known occurrence within the vicinity of the proposed project route in Kansas; however, potential breeding habitat occurs in Kansas south of I-70 in Trego County and in Ellis County. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-33

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Amphibians Wyoming toad 

Bufo baxteri FE, WY-NSS1 Low. An historic observation of this 

species was documented along the proposed project route in Laramie River Valley in Albany County, Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Fish Bonytail Gilia elegans FE; CO E; 

USFS-R4S 

Low. Critical habitat and historic occurrence in the Green River. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Colorado Pikeminnow 

Plychocheilus lucius 

FE; CO-E Low. Critical habitat and historic 

occurrence in the Green River. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Humpback chub 

Gilia cypha FE; CO E; 

USFS-R4S 

Low. Critical habitat and historic occurrence in the Green River. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Razorback sucker 

Xyrauchen texanus 

FE; CO-E; USFS-R4S 

Low. Critical habitat and historic occurrence in the Green River. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Pallid Sturgeon 

Scaphirhynchus albus 

FE; E None. This species and its required 

habitat are not found within the proposed project vicinity in Wyoming. However, the North Platte River provides water to occupied habitat in the Platte River in Nebraska. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. However, the South Platte River provides water to occupied habitat in the Platte River in Nebraska. 

Low. Known occurrence in the Platte River below the Elk River confluence. 

Plants Colorado butterfly plant 

Gaura neomexicana ssp. coloradensis 

FT High. Critical and Suitable habitat for this 

species is present within the project area. 

High. Critical and Suitable habitat for this species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Blowout penstemon 

Penstemon haydenii 

FE Low. Endemic to sand dunes south of 

Ferris Mountains in Carbon County, WY. Potential habitat may be present in the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Ute ladies'tresses 

Spiranthes diluvialis 

FT ; USFSR4S Moderate. Suitable habitat for this species is present within the project area. Moderate. Suitable habitat for this species is present within the project area. None. This species and its required habitat are not found within the proposed project 

vicinity in Kansas. 

Western prairie fringed orchid 

Platanthera praeclara 

FT Moderate. Suitable habitat for this 

species is present within the project area. 

Moderate. Suitable habitat for this species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-34

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

BLM Mammals Fringed myotis 

Myotis thysanodes 

BLM-WY; WY-NSS2; USFS-R2S 

Low. This species has been documented in the vicinity of the proposed project route. 

Low. No roosts or maternity colonies are known to occur on the PNG; however, suitable habitat is present on the PNG. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Long-eared myotis 

Myotis evotis BLM-WY; WYNSS2 Moderate. This species has been documented along the proposed project 

route. 

Low. No known occurrence within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Spotted bat Euderma 

maculatum 

BLM-WY; USFS-R4S; WY-NSS2 

Low. No known occurrence in the vicinity of the proposed project route in Wyoming; however, suitable habitat is present. 

Low. No known occurrence within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Townsend's big-eared bat 

Plecotus townsendii 

BLM-WY; USFS-R4S WY-NSS2; CO-SOC; KSSINC 

Low. This species has been documented within the vicinity of the proposed project route in Wyoming. 

Low. No known occurrence within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence within the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Pygmy rabbit Brachylagus 

idahoensis 

BLM-WY; USFS-R4S 

Moderate. This species has been documented within the vicinity of the proposed project route. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Swift fox Vulpes velox CO-SOC; 

USFS-R2S; BLM-WY 

Moderate. This species has been documented within the vicinity of the proposed project route. 

High. This species has been documented within the vicinity of the proposed project route in Colorado. This species has been documented and is widespread on the PNG. 

Moderate. No known occurrences in the proposed project vicinity in Kansas; however, suitable breeding habitat is present. 

White-tailed prairie dog 

Cynomys leucurus 

BLM-WY Moderate. This species has been 

documented within the vicinity of the proposed project route in Wyoming. 

Moderate. This species has been documented within the vicinity of the proposed project route in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Black-tailed prairie dog 

Cynomys ludovicianus 

BLM-WY; USFS-R2S; CO-SOC 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Wyoming. 

High. This species has been documented along the proposed project route in Colorado. Numerous active colonies have been documented on the PNG. 

Moderate. No known occurrences in the proposed project vicinity in Kansas; however, suitable breeding habitat is present. 

Idaho pocket gopher 

Thomomys idahoensis 

BLM-WY Low. No known occurrence of this 

species within the vicinity of the proposed project route in Wyoming; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Wyoming pocket gopher 

Thomomys clusius 

BLM –WY Moderate. This species has been 

documented along the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-35

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Birds Bald eagle Haliaeetus 

leucocephalus 

BLM-WY; USFS-R4S; CO-T; WYNSS2; KS-T 

Moderate. This species has been documented along the proposed project route in Wyoming. 

Moderate. This species has been documented along the proposed project route in Colorado. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable breeding habitat is present. 

Burrowing owl Athene 

cunicularia 

USFS-R2S; BLM-WY; CO-T 

High. This species has been documented along the proposed project route in Wyoming. 

High. This species has been documented along the proposed project route in Colorado. This species has been documented on all Breeding Bird Survey routes on the PNG. 

Moderate. No known occurrences in the proposed project vicinity in Kansas; however, suitable breeding habitat is present. 

Mountain plover 

Charadrius montanus 

BLM-WY; COSOC; USFSR2; USFSR4S; KSSINC High. This species was documented within the proposed project corridor in Wyoming High. This species was documented within the proposed project corridor in Colorado. Occurrence surveys conducted on the PNG in the mid 1990’s show widespread use of the PNG by this species for both nesting and 

foraging. 

Moderate. No known occurrences along the proposed project route in Kansas; however, suitable breeding habitat is present. 

Brewer's sparrow 

Spizella breweri BLM-WY; 

USFS-R2S 

High. This species was documented along the proposed project route in Wyoming. 

High. This species was documented along the proposed project route in Colorado. This species has been documented on all Breeding Bird Survey routes on the PNG. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Ferruginous hawk 

Buteo regalis CO-SOC; 

BLM-WY; USFS-R2S; KS-SINC 

High. This species was documented along the proposed project route in Wyoming. 

High. This species was documented along the proposed project route in Colorado. Known nesting and occurrence on the PNG. 

Moderate. No known occurrences along the proposed project route in Kansas; however, suitable breeding habitat is present. 

Loggerhead shrike 

Lanius ludovicianus 

BLM-WY; USFS-R2S 

High. This species was documented along the proposed project route in Wyoming. The BLM identified this species for detailed analysis. 

High. This species has been documented on the PNG on all Breeding Bird Survey routes. 

Moderate. No known occurrences in the proposed project vicinity in Kansas; however, suitable breeding habitat is present. 

Long-billed curlew 

Numenius americanus 

CO-SOC; BLM-WY; USFS-R2S; KS-SINC 

Moderate. This species was documented along the proposed project route in Wyoming. 

Low. This species was documented along the proposed project route in Colorado. Incidental observations on the PNG. 

Low. No known occurrences along the proposed project route in Kansas; however, suitable breeding habitat is present. 

Northern goshawk 

Accipiter gentiles 

BLM-WY; USFS-R4S 

Moderate. This species was documented within the proposed project are in Wyoming. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

Golden eagle Aquila 

chrysaetos 

BLM-WY; KS-SINC 

High. This species was documented along the proposed project route in Wyoming. 

Moderate. No known occurrences along the proposed project route in Colorado; however, suitable breeding habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable foraging habitat is present. 

Peregrine falcon 

Falco peregrinus 

KS-E; BLMWY; USFSR4S Moderate. This species was documented along the proposed project route in Wyoming. Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable foraging habitat 

is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable foraging habitat is present. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-36

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Sage sparrow Amphispiza 

belli 

BLM-WY Moderate. This species was documented 

along the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Sage thrasher

 Oreoscoptes montanus 

BLM-WY Moderate. This species was documented 

along the proposed project route in Wyoming. 

Low. No known occurrences in the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Trumpeter swan 

Cygnus buccinator 

BLM-WY; USFS-R4S; WY-NSS2 

Low. Limited to migrant habitat use on the FGNRA. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

White-faced ibis 

Plegadis chihi BLM-WY Moderate. This species has been 

documented along the proposed project route in Wyoming. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable breeding habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable breeding habitat is present. 

Greater sagegrouse Centrocercus urophasianus CO-SOC; BLM-WY; WYNSS2; USFSR4S High. This species has been documented within the vicinity of the proposed project route. 18 leks have been documented within 1 mile of the proposed project 

route. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Kansas. 

Reptiles Midget faded rattlesnake 

Crotalus viridis concolor 

BLM-WY; COSOC Moderate. This species has been documented along the proposed project 

route in Wyoming. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Amphibians Western boreal toad 

Bufo boreas boreas 

CO-E; BLMWY; WYNSS2 Moderate. This species has been documented along the proposed project route in Wyoming. Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Great Basin spadefoot toad 

Spea intermontana 

BLM-WY High. This species has been documented 

along the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Spotted frog Ranus pretiosa BLM-WY Low. No known occurrence in the vicinity 

of the proposed project route in Wyoming; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Northern leopard frog 

Rana pipiens BLM-WY; 

USFS-R2S; CO-SOC. 

High. This species has been documented along the proposed project route in Wyoming. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Fish Bluehead sucker 

Catostomus discobolus 

BLM-WY; WYGF-NSS1 

High. Known occurrence in Hams Fork River, Blacks Fork River, and Green River in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-37

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Flannelmouth sucker 

Catostomus latipinnis 

BLM-WY; WYGF-NSS1 

High. Known occurrence in Hams Fork River, Blacks Fork River, Green River, and Bitter Creek in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Leatherside chub 

Gila copei BLM-WY; 

WYGF-NSS1 

Moderate. Potential occurrence in the Green River and Bear Creek in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Roundtail chub 

Gila robusta BLM-WY; WYNSS1 Moderate. Known occurrence in Hams Fork and Blacks Fork rivers in Wyoming. None. This species and its required habitat are not found within the proposed project 

vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Plants Laramie columbine 

Aquilegia laramiensis 

BLM -WY Moderate. Suitable habitat for this 

species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Nelson's milkvetch 

Astragalus nelsonianus 

BLM-WY High. Potential habitat present. 

Known from basins and foothills of Carbon, Natrona, and Sweetwater counties, Wyoming, with one population in Colorado. This species has been documented within the project area. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Trelease's racemose milkvetch 

Astragalus racemosus var. treleasei 

BLM-WY Moderate. Suitable habitat for this 

species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Cedar Rim thistle 

Cirsium aridum BLM -WY Low. One area of potential habitat within 

project area based on WYNND model. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Ownbey's thistle 

Cirsium ownbeyi 

BLM-WY Moderate. Suitable habitat for this 

species is present within the project area. Known occurrence adjacent to the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Large-fruited bladderpod 

Lesquerella macrocarpa 

BLM-WY High. This species has been documented 

within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Prostrate bladderpod 

Lesquerella prostrata 

BLM-WY Moderate. Suitable habitat is present 

within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Gibbens' beardtongue 

Penstemon gibbensii 

BLM-WY Moderate. This species could occur 

within potentially suitable habitat along the project route in Sweetwater and Carbon Counties, Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Tufted twinpod 

Physaria condensata 

BLM-WY High. Suitable habitat for this species is 

present within the project area. Known occurrence adjacent to the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-38

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Persistent sepal yellowcress 

Rorippa calycina 

BLM -WY High. Known occurrences and suitable 

habitat for this species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Laramie false sagebrush 

Sphaeromeria symplex 

BLM -WY Moderate. Suitable habitat for this 

species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Green River greenthread 

Thelesperma caespitosum 

USFS- R4S; BLM -WY 

High. This species has been documented within the project corridor. Suitable habitat present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

USFS Birds Cassin's sparrow 

Aimophila cassini 

USFS-R2S Moderate. No known occurrences in the 

proposed project vicinity in Wyoming; however, suitable breeding habitat is present. 

Moderate. This species has been documented on all Breeding Bird Survey routes on the PNG. 

Moderate. No known occurrences in the proposed project vicinity in Kansas; however, suitable breeding habitat is present. 

McCown’s longspur 

Calcarius mccownii 

USFS-R2S Moderate. This species was documented 

along the proposed project route in Wyoming. 

High. This species has been documented within the proposed project corridor in Colorado. This species has been documented on all Breeding Bird Survey routes on the PNG. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Chestnutcollard longspur 

Calcarius ornatus 

USFS-R2S Low. No known occurrences in the 

proposed project vicinity in Wyoming; however, suitable breeding habitat is present. 

Moderate. This species was documented along the proposed project route in Colorado. This species has been documented on the PNG on four of the five Breeding Bird Survey routes. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Northern harrier 

Circus cyaneus USFS-R2S Low. No known occurrence in the vicinity 

of the proposed project route in Wyoming; however, suitable year round habitat is present. 

Low. Common year- round residents on the PNG. Not known to nest on the PNG. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable year round habitat is present. 

Grasshopper sparrow 

Ammodramus savannarum 

USFS-R2S Low. This species has been documented 

within the vicinity of proposed project route in Wyoming. 

Moderate. Fairly common summer resident on the PNG. This species has been documented on all Breeding Bird Survey routes on the PNG. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Black tern Chlidonias 

niger 

USFS-R2S; KS-SINC. 

Low. No known occurrences in the proposed project vicinity in Wyoming; however, suitable breeding habitat is present. 

Moderate. Known to breed in isolated patches in Colorado. Fairly common summer resident with limited nesting habitat on the PNG. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, potential breeding habitat is present. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-39

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Plants Dwarf milkweed 

Asclepias uncialis 

USFS-R2S None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Moderate. Suitable habitat for this species is present within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Prairie moonwort 

Botrychium campestre 

USFS-R2S None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Moderate. Suitable habitat present on PNG. None. This species and its required 

habitat are not found within the proposed project vicinity in Kansas. 

Wyoming feverfew 

Parthenium alpinum 

Former USFSR2S None. This species and its required habitat are not found within the vicinity of 

the proposed project route in Wyoming. 

High. Potential habitat present. Known from occurrences in Weld County, Colorado. This species has been documented within the project area. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

State Status Mammals Northern pocket gopher 

Thomomys talpoides 

CO-SOC Moderate. This species has been 

documented along the proposed project route in Wyoming. 

Low. No known occurrence of this species has been documented within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Franklin’s ground squirrel 

Spermophilus franklinii 

KS-SINC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

Low. No known occurrence within the vicinity of the proposed project route; however, limited suitable habitat is present. 

Long-legged myotis 

Myotis volans WY-NSS2 Moderate. This species has been 

documented along the proposed project route. 

Low. No known occurrence within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Pallid bat Antrozous 

pallidus 

WY-NSS2; KS-SINC 

Moderate. This species has been documented within the vicinity of the proposed project route. 

Low. No known occurrence within the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Eastern spotted skunk 

Spilogale putorius 

KS-T None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

Moderate. The species is known to occur along the proposed project route in Kansas. Designated critical habitat occurs in three counties crossed by the proposed route. 

Birds Snowy plover Charadrius 

alexandrinus 

KS-T; COSOC Low. No known occurrences in the proposed project vicinity in Wyoming; 

however, suitable breeding habitat is present. 

Low. No known occurrences in the proposed project vicinity in Colorado; however, suitable breeding habitat is present. 

Low. No known occurrences in the proposed project vicinity in Kansas; however, suitable breeding habitat is present. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-40

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Black Rail Laterallus 

jamaicensis 

KS-SINC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

None. This species and its required habitat are not found within the vicinity of the proposed project route in Colorado. 

Low. No known occurrences within the vicinity of the proposed project route; however, suitable breeding habitat is present. 

Short-eared owl 

Asio flammeus KS-SINC Low. No known occurrences in the 

proposed project vicinity in Wyoming; however, suitable breeding habitat is present. 

Low. No known occurrences in the proposed project vicinity in Colorado; however, suitable breeding habitat is present. 

Moderate. No known occurrences within the vicinity of the proposed project route;; however, suitable wintering habitat is present. . It is a transient and an irregular or local winter resident throughout Kansas. Most records of occurrence are from October 16 to April 15, but a few may occur at any time in proper habitat. 

Bobolink Dolichonyx 

oryzivorus 

KS-SINC Low. No known occurrence within the 

vicinity of the proposed project route in Wyoming; however, suitable breeding habitat is present. 

Low. No known occurrence within the vicinity of the proposed project route in Colorado; however, suitable breeding habitat is present. 

Low. No known occurrence within the vicinity of the proposed project route; however, suitable breeding habitat is present. This species casually occurs in western Kansas, where it may possibly breed very locally. Nesting has been confirmed from Barton, Cloud, and Stafford counties. 

Reptiles Glossy snake Arizona 

elegans 

KS-SINC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Western hognose snake 

Heterodon nasicus 

KS-SINC Low. No known occurrence in the vicinity 

of the proposed project route in Wyoming; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Common garter snake 

Thamnophis sirtalis 

CO-SOC Low. No known occurrence in the vicinity 

of the proposed project route in Wyoming; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Eastern hognose snake 

Heterodon platirhinos 

KS-SINC Low. No known occurrence in the vicinity 

of the proposed project route in Wyoming; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Yellow mud turtle 

Kinosternon flavescens 

CO-SOC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Moderate. This species has been documented along the proposed project route in Colorado. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 
Table I-2 Special Status Species Potential for Occurrence by State for the Overland Pass Pipeline Project 

I-41

Common 

Name Scientific Name Status 

Potential for Occurrence 

Wyoming Colorado Kansas 

Amphibians Northern cricket frog 

Aeris crepitans CO-SOC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Plains leopard frog 

Rana blairi CO-SOC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Low. No known occurrence in the vicinity of the proposed project route in Colorado; however, suitable habitat is present. 

Low. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is present. 

Fish Plains minnow 

Hybognathus placitus 

CO-E; KSSINC Low. No known occurrence in the vicinity of the proposed project route in 

Wyoming; however, suitable habitat is present. 

Moderate to high. Potential for occurrence in the South Platte and Republican rivers in Colorado. 

Moderate to High. Potential for occurrence in the Republican river in Kansas. 

Brassy minnow 

Hybognathus hankinsoni 

CO-T; KSSINC None. This species and its required habitat are not found within the vicinity of 

the proposed project route in Wyoming. 

Moderate to high. Potential for occurrence in the South Platte and Republican rivers in Colorado. 

Moderate to High. Potential for occurrence in the Republican river in Kansas. 

Orangethroat darter 

Etheostoma spectable 

CO-SOC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Moderate. Known occurrence in the North Fork Republican River and Chief Creek. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Stonecat Noturus flavus CO-SOC None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Low. Known occurrence in the Republican River drainage. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Suckermouth minnow 

Phenacobius mirabilis 

CO-E None. This species and its required 

habitat are not found within the vicinity of the proposed project route in Wyoming. 

Moderate. Potential occurrence in the South Platte and Republican Rivers. 

None. This species and its required habitat are not found within the proposed project vicinity in Kansas. 

Invertebrates Cylindrical papershell 

Anodontoides ferussacianus 

KS-SINC None. This species and its required 

habitat are not found within the proposed project vicinity in Wyoming. 

None. This species and its required habitat are not found within the proposed project vicinity in Colorado. 

Moderate. No known occurrence in the vicinity of the proposed project route in Kansas; however, suitable habitat is crossed. 

FE= Federal Endangered FT= Federal Threatened FC= Federal Candidate CO-E= Colorado Endangered CO-T= Colorado Threatened CO-SOC= Colorado Species of Concern KS-E= Kansas Endangered KS-T= Kansas Threatened 

KS-SINC= Kansas Species in Need of Conservation WY-NSS1= Wyoming Critically Imperiled Species WY-NSS2= Wyoming Imperiled Species BLM-WY = Wyoming BLM sensitive. USFS-R2S = USFS Region 2 sensitive species USFS-R4S = USFS Region 4 sensitive species PNG- Pawnee National Grasslands