# List of Gruiformes by population

This is a list of Gruiformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.
This list is not comprehensive, as not all Gruiformes have had their numbers quantified.

## Species by global population

| Common name | Binomial name | Population | Status | Trend | Notes |
| Makira woodhen | Gallinula silvestris | 50 | CR | Unknown | Maximum estimate; possibly extinct. |
| New Caledonian rail | Gallirallus lafresnayanus | 50 | CR | Unknown | Maximum estimate; possibly extinct. |
| Samoan wood rail | Gallinula pacifica | 50 | CR | Unknown | Maximum estimate; possibly extinct. |
| Plain-flanked rail | Rallus wetmorei | 50 – 249 | EN | | |
| Zapata rail | Cyanolimnas cerverai | 70 – 400 | CR | | |
| Lord Howe woodhen | Gallirallus sylvestris | 220 – 230 | EN | | Endemic to Lord Howe Island. |
| Great Indian bustard | Ardeotis nigriceps | 300 | CR | | |
| Takahē | Porphyrio hochstetteri | 340- 350 | EN | | |
| Bengal florican | Houbaropsis bengalensis | 350 – 1500 | CR | | |
| Kagu | Rhynochetos jubatus | 350 – 1500 | EN | | |
| Rusty-flanked crake | Laterallus levraudi | 350 – 1500 | EN | | |
| Slender-billed flufftail | Sarothrura watersi | 350 – 1500 | EN | | |
| Whooping crane | Grus americana | 382 | EN | | Number refers to wild population only, of which 266 are considered self-sustaining. |
| Okinawa rail | Gallirallus okinawae | 720 | EN | | |
| Buff-breasted buttonquail | Turnix olivii | 750 | EN | | |
| White-winged flufftail | Sarothrura ayresi | 865 – 880 | EN | | |
| Madagascan wood rail | Canirallus kioloides | 1000 – 2000 | LC | | |
| Junin crake | Laterallus tuerosi | 1000 – 2499 | EN | | |
| Masked finfoot | Heliopais personatus | 1000 – 2499 | EN | | |
| Talaud rail | Gymnocrex talaudensis | 1000 – 2499 | EN | | |
| Chestnut-headed flufftail | Sarothrura lugens | 1000 – 10 000 | LC | | |
| Spotted rail | Pardirallus maculatus | 1000 – 10 000 | LC | Unknown | |
| Streaky-breasted flufftail | Sarothrura boehmi | 1000 – 10 000 | LC | | |
| Bogotá rail | Rallus semiplumbeus | 1500 – 4000 | EN | | |
| Brown wood rail | Aramides wolfi | 1500 – 4000 | VU | | Preliminary estimate. |
| Hawaiian coot | Fulica alai | 2000 – 4000 | VU | | |
| Lesser florican | Sypheotides indicus | 2200 | EN | | |
| Madagascan rail | Rallus madagascariensis | 2500 – 10 000 | VU | | |
| Pink-legged rail | Gallirallus insignis | 2500 – 9999 | NT | | |
| Rouget's rail | Rougetius rougetii | 2500 – 9999 | NT | | |
| Roviana rail | Gallirallus rovianae | 2500 – 9999 | NT | | |
| Red-crowned crane | Grus japonensis | 2750 | EN | | |
| Clapper rail | Rallus longirostris | 3500 – 3700 | LC | | |
| Auckland rail | Lewinia muelleri | 3500 – 4000 | VU | | Estimate is for mature population only. |
| Siberian crane | Leucogeranus leucogeranus | 3500 – 4000 | CR | | Western subpopulation is 4. |
| Blue-faced rail | Gymnocrex rosenbergii | 3500 – 15 000 | VU | | |
| Brown mesite | Mesitornis unicolor | 3500 – 15 000 | VU | | |
| Dot-winged crake | Porzana spiloptera | 3500 – 15 000 | VU | | |
| Invisible rail | Habroptila wallacii | 3500 – 15 000 | VU | | |
| Rufous-faced crake | Laterallus xenopterus | 3500 – 15 000 | VU | | Preliminary estimate. |
| Sakalava rail | Amaurornis olivieri | 3500 – 15 000 | EN | | |
| Snoring rail | Aramidopsis plateni | 3500 – 15 000 | VU | | |
| Sumba buttonquail | Turnix everetti | 3500 – 15 000 | VU | | |
| Swinhoe's rail | Coturnicops exquisitus | 3500 – 15 000 | VU | | |
| Talaud bush-hen | Amaurornis magnirostris | 3500 – 15 000 | VU | | |
| Calayan rail | Gallirallus calayanensis | 3800 – 6500 | VU | | |
| White-throated rail | Dryolimnas cuvieri | 5100 – 7500 | LC | | |
| White-naped crane | Grus vipio | 5500 – 6500 | VU | | |
| Wattled crane | Bugeranus carunculatus | 6000 – 8000 | VU | | |
| Black-breasted buttonquail | Turnix melanogaster | 7500 | NT | | |
| White-breasted mesite | Mesitornis variegatus | 8000 | VU | | Minimum estimate. |
| Inaccessible Island rail | Atlantisia rogersi | 8400 | VU | | |
| Red-eyed crake | Porzana atra | 9300 | VU | | |
| Horned coot | Fulica cornuta | 10 000 – 19 999 | NT | | |
| Woodford's rail | Nesoclopeus woodfordi | 10 000 – 19 999 | NT | | |
| Andaman crake | Rallina canningi | 10 000 – 25 000 | NT | | |
| Austral rail | Rallus antarcticus | 10 000 – 25 000 | VU | | |
| Yellow rail | Coturnicops noveboracensis | 10 000 – 25 000 | LC | | |
| White-breasted waterhen | Amaurornis phoenicurus | 10 000 – 100 000 | LC | Unknown | |
| Black-necked crane | Grus nigricollis | 10 070 – 10 970 | VU | | |
| Hooded crane | Grus monacha | 11 600 | VU | | |
| Blue korhaan | Eupodotis caerulescens | 12 000 – 15 000 | NT | | |
| Gough moorhen | Gallinula nesiotis | 13 000 – 14 000 | VU | | |
| Sarus crane | Antigone antigone | 19 000 – 21 800 | VU | | |
| Galapagos crake | Laterallus spilonotus | 20 000 – 49 999 | VU | | |
| Ruddy crake | Laterallus ruber | 20 000 – 49 999 | LC | Unknown | |
| Uniform crake | Amaurolimnas concolor | 20 000 – 49 999 | LC | | |
| Yellow-breasted crake | Porzana flaviventer | 20 000 – 49 999 | LC | Unknown | |
| Blue crane | Anthropoides paradiseus | 25 580 | VU | | Minimum estimate. |
| Black crowned crane | Balearica pavonina | 43 000 – 70 000 | VU | | Divided into two subspecies: B. p. pavonina (15 000) & B. p. ceciliae (28 000 – 55 000). |
| Great bustard | Otis tarda | 44 000 – 57 000 | VU | | |
| Grey crowned crane | Balearica regulorum | 50 000 – 64 000 | EN | | Numbers are from 2004; considered too high due to the rapidly decreasing population. |
| Rufous-necked wood rail | Aramides axillaris | 50 000 – 499 999 | LC | Unknown | |
| Ludwig's bustard | Neotis ludwigii | 56 000 – 81 000 | EN | | Population may be lower due to an apparent recent spate of power-line collisions. |
| Subdesert mesite | Monias benschi | 98 000 – 152 000 | VU | | |
| Australian bustard | Ardeotis australis | 100 000 | LC | | Maximum estimate. |
| Houbara bustard | Chlamydotis undulata | 106 000 – 110 000 | VU | | Preliminary estimate. |
| Weka | Gallirallus australis | 107 000 – 177 000 | VU | | Divided into four subspecies: G. a. australis (50 000 – 100 000), G. a. greyi (~11 000), G. a. hectori (38 000 – 58 000), & G. a. scotti (<8000) |
| Demoiselle crane | Anthropoides virgo | 230 000 – 280 000 | LC | | Minimum estimate. |
| Little bustard | Tetrax tetrax | 260 000 | NT | | Minimum estimate. |
| Common crane | Grus grus | 360 000 – 370 000 | LC | Unknown | |
| Sunbittern | Eurypyga helias | 500 000 – 4 999 999 | LC | | |
| Sungrebe | Heliornis fulica | 500 000 – 4 999 999 | LC | Unknown | |
| Black crake | Amaurornis flavirostra | 1 000 000 | LC | Unknown | |
| Limpkin | Aramus guarauna | 1 000 000 | LC | | |
| Red-gartered coot | Fulica armillata | 1 000 000 | LC | Unknown | |
| White-winged coot | Fulica leucoptera | 1 000 000 | LC | | |
| Plumbeous rail | Pardirallus sanguinolentus | 1 000 000 – 2 000 000 | LC | | |
| Common moorhen | Gallinula chloropus | 3 900 000 – 8 100 000 | LC | Unknown | |
| Grey-necked wood rail | Aramides cajaneus | 5 000 000 – 50 000 000 | LC | | |
| Corn crake | Crex crex | 5 450 000 – 9 720 000 | LC | | Preliminary estimate; may be lower. |
| American coot | Fulica americana | 6 000 000 | LC | | |