Oreoscoptes montanus

Oreoscoptes montanus ye una ave paseriforme de tamañu medianu de la familia Mimidae, que tamién inclúi a los sinsontes, tembladores, y páxaros gatu. Ye l'únicu miembru del xéneru Oreoscoptes. Paez menos emparentáu colos cuitlacoches del Caribe, que colos sinsontes (Hunt et al. 2001, Barber et al. 2004).

Descripción
Les partes inferiores de O. montanus son de tonu gris-marrón pálido, ente que'l so envés ye blancu con franxes escures. Tienen un picu delgáu rectu relativamente curtiu, güeyos mariellos y una cola llarga, anque non tanto como la cola d'otres especies de cuitlacoches.

Reproducción
Esta ave reproduzse nel oeste d'América del Norte, dende'l sur de Canadá hasta'l norte d'Arizona y Nuevu Méxicu. El so hábitat de reproducción son zones con carbes d'artemisia y escasamente otres zones arbustives. La fema pon de 4 a 5 güevos nun nial en forma de taza construyíu con ramines y allugáu ente pacionales baxos. Dambos miembros de la pareya guaren y alimenten a los pichones.

Pel hibiernu, estes aves migren escontra'l sur d'Estaos Xuníos y Méxicu, incluyendo'l sur y norte de la península de Baxa California.

Alimentación y comportamientu
Pel branu aliméntense d'inseutos; tamién comen bayes, especialmente pel hibiernu. Polo xeneral busquen inseutos nel suelu en zones con arbustos.

El machu entona una serie de gorjeos pa defender el territoriu nel que s'atopa'l nial.

La población d'estes aves menguó en delles zones onde se quitaron la artemisia pero entá son comunes naquelles zones en que'l so hábitat preferíu caltúvose. L'amenorgamientu de hábitats de artemisia nel oeste d'América del Norte ye motivu d'esmolición pa la esistencia d'esta y otres especies dependientes de la artemisia.

 Referencies 

Barber, Brian R.; Martínez-Gómez, Juan Y. & Peterson, A. Townsend (2004): Systematic position of the Socorro mockingbird Mimodes graysoni. J. Avian Biol. 35: 195-198.  (HTML abstract)

Hunt, Jeffrey S.; Bermingham, Eldredge; & Ricklefs, Robert E. (2001): Molecular systematics and biogeography of Antillean thrashers, tremblers, and mockingbirds (Aves: Mimidae). Auk 118(1): 35–55. DOI:10.1642/0004-8038(2001)118[0035:MSABOA]2.0.CO;2 HTML fulltext without images

 Enllaces esternos 

 Sage Thrasher Species Account - Cornell Lab of Ornithology
 Sage Thrasher Oreoscoptes montanus  - USGS Patuxent Bird Identification InfoCenter
  VIREO
 Sage Thrasher videos on the Internet Bird Collection
 Photo and description  - Utah Division of Wildlife Resources

Bibliografía
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 Petersen KL. Ph.D. (1986). AVIAN ECOLOGICAL STUDIES IN A SAGEBRUSH COMMUNITY: BIRD RESPONSES TO FIRE AND TERRITORY DYNAMICS IN A SPARROW POPULATION (IDAHO). Iowa State University, United States -- Iowa.
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 Medin DE. (1992). BIRDS OF A GREAT-BASIN SAGEBRUSH HABITAT IN EAST-CENTRAL NEVADA. Usda Forest Service Intermountain Research Station Research Paper. non 452. p. O1-O4.
 Noson AC, Schmitz RA & Miller RF. (2006). Influence of fire and Juniper encroachment on birds in high-elevation sagebrush steppe. Western North American Naturalist. vol 66, non 3. p. 343-353.
 Petersen KL & Best LB. (1991). Nest-Site Selection by Sage Thrashers in Southeastern Idaho. Great Basin Naturalist. vol 51, non 3. p. 261-266.
 Reynolds TD. (1981). Nesting of the Sage Thrasher Oreoscoptes-Montanus Sage Sparrow Amphispiza-Belli and Brewers Sparrow Spizella-Breweri in Southeastern Idaho USA. Condor. vol 83, non 1. p. 61-64.
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 Williams NS. (1983). 3 New Species of Brueelia Mallophaga Philopteridae from the Mimidae Aves Passeriformes. Proceedings of the Biological Society of Washington. vol 96, non 4. p. 599-604.

 Wilson Ornithol Soc Conserv C. (1976). Conservation Committee Report on Effects of Alteration of Sagebrush Communities on the Associated Avi Fauna. Wilson Bulletin. vol 88, non 1. p. 165-171.

Categoría:Mimidae
Categoría:Xéneros monotípicos d'aves
Categoría:TBSpecies