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List of Gruiformes by population

From Wikipedia, the free encyclopedia

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.

Not all Gruiformes have had their numbers quantified, but species without population estimates are included in a secondary table below.

The IOC World Bird List (version 15.1) recognizes 190 species of Gruiformes, 21 of which are extinct.[1] Species status within Gruiformes is particularly unresolved compared to other orders. As of December 2025, IOC lists six species which are considered subspecies by IUCN/BirdLife International. Similarly, IUCN/BirdLife International list four species which still have subspecies status in IOC taxonomies. See 'Notes' column of included tables for more information on these taxonomic disputes.

This list follows IUCN classifications for species names and taxonomy. Where IUCN classifications differ from other ornithological authorities, alternative names and taxonomies are noted.

Several species included as members of Gruiformes are extinct:

Species by global population

More information Common name, Binomial name ...
Common name Binomial name Population Status Trend Notes Image
Samoan moorhen

(Samoan woodhen)

Gallinula pacifica0-49[23]CR[23]?[23]May be extinct. Last confirmed record in 1873; recent surveys have returned no evidence of an extant population.[23]

IUCN/BirdLife International place species in genus Pareudiastes.

Makira woodhenGallinula silvestris1-49[24]CR[24]?[24]Last undisputed scientific observation occurred in 1953; however, unconfirmed sightings as recently as 2014 indicate the species persists in small numbers.[24]

IUCN/BirdLife International place species in genus Pareudiastes.

New Caledonian railGallirallus lafresnayanus1-49[25]CR[25]?[25]May be extinct. Last confirmed sighting in 1890, and no unconfirmed sightings since 1984.[25]
Guam rail Hypotaenidia owstoni 1-49[26] CR[26] Increase[26] Species was formerly extinct in the wild. A reintroduced population is now established on Cocos.[26]
Zapata railMustelirallus cerverai50-249[27]CR[27]Decrease[27]Total population is estimated to be 70-400 individuals.[27]

IUCN/BirdLife International place species in genus Cyanolimnas.

White-winged flufftailSarothrura ayresi50-249[28]CR[28]Decrease[28]Best estimate for number of mature individuals is 226.[28]
South Island takahē

(Takahē)

Porphyrio hochstetteri50-249[29]EN[29]Increase[29]Total population is estimated to be 418 individuals.[29]
Whooping craneGrus americana50-249[30]EN[30]Increase[30]Total wild population is 483 individuals; the only self-sustaining breeding population contains 329 individuals, of whom less than 250 are mature.[30]
Black-winged trumpeter Psophia obscura 50-400[31] CR[31] Decrease[31] Note that IOC does not recognize as a full species; classifies as a subspecies of dark-winged trumpeter.[1]
Masked finfootHeliopais personatus108-304[32]CR[32]Decrease[32]
Lord Howe woodhenHypotaenidia sylvestris200-286[33]EN[33]Increase[33]Endemic to Lord Howe Island. Best estimate for number of mature individuals is 230.[33]
Plain-flanked railRallus wetmorei200-1,000[34]EN[34]Decrease[34]
Sakalava railZapornia olivieri250-999[35]EN[35]Decrease[35]
Slender-billed flufftailSarothrura watersi250-999[36]NT[36]Decrease[36]

Okinawa railHypotaenidia okinawae480[37]EN[37]Decrease[37]Total population is estimated to be 720 individuals.[37]
Talaud railGymnocrex talaudensis500-2,500[38]EN[38]Decrease[38]Best estimate for number of mature individuals is 500-1,000.[38]
Chestnut-headed flufftailSarothrura lugens670-6,700[39]LC[39]Decrease[39]Total population is estimated to be 1,000-10,000 individuals.[39]
Rusty-flanked crakeLaterallus levraudi1,000-2,499[40]VU[40]Decrease[40]Total population is estimated to be 1,500-3,750 individuals.[40]
Austral railRallus antarcticus1,000-9,999[41]VU[41]Decrease[41]Best estimate for number of mature individuals is 2,500-9,999.[41]
Rufous-faced crakeRufirallus xenopterus1,000-10,000[42]VU[42]Decrease[42]IUCN/BirdLife International place species in genus Laterallus.
Hawaiian cootFulica alai1,250-1,750[43]NT[43]Steady[43]Total population is estimated to be, at minimum, 1,248– 2,577 individuals.[43]
New Britain rail

(Pink-legged rail)

Hypotaenida insignis1,500-7,000[44]NT[44]Decrease[44]Total population is estimated to be 2,500-9,999 individuals.[44]
Rouget's railRougetius rougetii1,500-7,000[45]NT[45]Decrease[45]Total population is estimated to be 2,500-9,999 individuals.[45]
Madagascar railRallus madagascariensis1,600-6,700[46]VU[46]Decrease[46]Total population is estimated to be 2,500-10,000 individuals.[46]
Auckland Island rail

(Auckland rail)

Lewinia muelleri2,000[47]VU[47]Steady[47]
Red-crowned craneGrus japonensis2,000-2,650[48]VU[48]Decrease[48]Best estimate for number of mature individuals is 2,300.[48]
Calayan railAptenorallus calayanensis2,500-6,000[49]VU[49]Decrease[49]
Tsingy forest rail Mentocrex beankaensis 2,500-9,999[50] VU[50] Decrease[50]
Roviana railHypotaenida rovianae2,500-9,999[51]LC[51]Steady[51]Population estimated is considered to be outdated.[51]
Talaud bush-henAmaurornis magnirostris2,500-20,000[52]VU[52]Decrease[52]
Galapagos rail

(Galapagos crake)

Laterallus spilonota3,300-6,700[53]VU[53]Decrease[53]Total population is estimated to be 5,000-10,000 individuals.[53]
Siberian craneLeucogeranus leucogeranus3,500-4,000[54]CR[54]Decrease[54]Values given are for total population.[54]
Bogotá railRallus semiplumbeus3,700[55]VU[55]Decrease[55]Total population is estimated to be 5,600 individuals.[55]
White-naped craneAntigone vipio3,700-4,500[56]VU[56]Decrease[56]Total population is estimated to be 6,250-6,750 individuals.[56]

IUCN/BirdLife International place species in genus Grus.

Henderson Island crake

(Red-eyed crake)

Zapornia atra3,800-8,400[57]VU[57]Steady[57]Best estimate for number of mature individuals is 6,400 individuals. To population is estimated to be 8,513 individuals.[57]
Junin rail

(Junin crake)

Laterallus tuerosi4,100[58]EN[58]Decrease[58]Note that IOC taxonomy treats this species as a subspecies of black rail (L. jamaicensis).[1]
Horned cootFulica cornuta5,000-25,000[59]NT[59]Decrease[59]
White-throated railDryolimnas cuvieri5,099-7,499[60]LC[60]?[60]Values are for total population. Likely a large underestimate, as numbers do not include an estimate for Madagascar, which composes the majority of the species' range.[60]
Inaccessible Island railLaterallus rogersi5,460-7,320[61]VU[61]Steady[61]Best estimate for number of mature individuals is 6,180. Total population is estimated to be 9,100 - 12,200 individuals.[61]
Wattled craneGrus carunculata6,000-6,300[62]VU[62]Decrease[62]Total population is estimated to be 9,000-10,000 individuals.[62]

IUCN/BirdLife International give the binomial name Bugeranus carunculatus.

Black-necked craneGrus nigricollis6,600-6,800[63]NT[63]Steady[63]Total population is estimated to be 10,000-10,200 individuals.[63]
Black-tailed native-hen Tribonyx ventralis 6,600-670,000[64] LC[64] Steady[64] Total population is estimated to be 10,000-1,000,000 individuals.[64]
Andaman crakeRallina canningi6,700-17,000[65]LC[65]Decrease[65]Total population is estimated to be 10,000-25,000 individuals.[65]
Yellow railCoturnicops noveboracensis6,700-17,000[66]LC[66]Decrease[66]Total population is estimated to be 10,000-25,000 individuals.[66]
Madagascar flufftail Sarothrura insularis 6,700-66,700[67] LC[67] ?[67] Total population is estimated to be 10,000-100,000 individuals.[67]
Spotted railPardirallus maculatus7,000-18,000[68]LC[68]Steady[68]Total population is estimated to be 11,000-26,700 individuals. Population may be larger than estimated.[68]
Yellow-breasted crakeLaterallus flaviventer>7,000[69]LC[69]?[69]
Dot-winged crakeLaterallus spilopterus8,000-19,999[70]NT[70]Decrease[70]
Gough Island moorhen

(Gough moorhen)

Gallinula comeri8,500[71]VU[71]Steady[71]Total population is estimated to be 13,000 individuals. Note that there are ~4,000 additional mature individuals on Tristan da Cunha, but they are introduced, and thus not counted in IUCN estimates.[71]
Hooded craneGrus monacha9,750-13,000[72]VU[72]Increase[72]Total population is estimated to be 15,000-18,000 individuals.[72]
Speckled rail Laterallus notatus 10,000[73] LC[73] ?[73] Value is for total population. May be a large underestimate.[73]

IUCN/BirdLife International list species in genus Coturnicops.

Ridgway's rail Rallus obsoletus 10,000-19,999[74] NT[74] Decrease[74]
Slaty-breasted wood-rail Aramides saracura 10,000-25,000[75] LC[75] Decrease[75]
Azure galliule Porphyrio flavirostris 10,000-25,000[76] LC[76] Steady[76] Values are for total population; likely an underestimate.[76]
Striped crake Aenigmatolimnas marginalis 10,000-25,000[77] LC[77] ?[77] IUCN/BirdLife International place species in genus Amaurornis.
Black rail Laterallus jamaicensis 10,000-49,999[78] EN[78] Decrease[78]
Giant coot Fulica gigantea 10,000-50,000[79] LC[79] Steady[79]
African crake Crex egregia 10,000-1,000,000[80] LC[80] ?[80] Values given are for total population, but estimate is considered to be outdated.[80]
Buff-banded rail Hypotaenidia philippensis 10,600-141,000[81] LC[81] Steady[81] Total population is estimated to be 15,850-210,991 individuals.[81]
Blackish rail Pardirallus nigricans 13,300-73,300[82] LC[82] ?[82] Total population is estimated to be 20,000-110,000 individuals.[82]
Mexican rail

(Aztec rail)

Rallus tenuirostris 15,000[83] NT[83] Decrease[83]
Brown wood-railAramides wolfi>15,000[84]LC[84]Decrease[84]No formal estimates have been quantified. Values assume a very conservative species density from limited surveys.[84]
Sarus craneAntigone antigone15,000-17,500[85]VU[85]Decrease[85]Best estimate for number of mature individuals is 16,000.[85]

IUCN/BirdLife International place species in genus Grus.

Rufous-sided crake Laterallus melanophaius 16,700-66,700[86] LC[86] Steady[86] Total population is estimated to be 24,999-99,999 individuals.[86]
Red-fronted coot Fulica rufifrons 16,700-66,700[87] LC[87] Steady[87] Total population is estimated to be 25,000-100,000 individuals.[87]
Red-and-white crake Rufirallus leucopyrrhus 16,700-66,700[88] LC[88] Steady[88] Total population is estimated to be 25,000-100,000 individuals.[88]

IUCN/BirdLife International place species in genus Laterallus.

Allen's gallinule Porphyrio alleni 16,700-667,000[89] LC[89] ?[89] Total population is estimated to be 25,000-1,000,000 individuals.[89]
Lesser moorhen Paragallinula angulata 16,700-667,000[90] LC[90] Decrease[90] Total population is estimated to be 25,000-1,000,000 individuals.[90]
Blue craneGrus paradisea17,000-30,000[91]VU[91]Decrease[91]Total population is estimated to be 25,550-45,132 individuals.[91]

IUCN/BirdLife International give the binomial name Anthropoides paradiseus.

Grey crowned craneBalearica regulorum20,100-24,600[92]EN[92]Decrease[92]Total population is estimated to be 30,200-36,900 individuals.[92]
African finfoot Podica senegalensis 30,000-823,000[93] LC[93] ?[93] Total population is estimated to be 45,002-1,235,000 individuals.[93]
Brolga Antigone rubicunda 35,000-74,000[94] LC[94] Steady[94] Total population is estimated to be 52,000-110,000 individuals.[94]

IUCN/BirdLife International place species in genus Grus.

Black crowned craneBalearica pavonina44,000-74,000[95]VU[95]Decrease[95]Total population is estimated to be 66,000-111,000 individuals.[95]
Russet-naped wood-rail Aramides albiventris 50,000-499,999[96] LC[96] Decrease[96]
Rufous-necked wood-railAramides axillaris50,000-499,999[97]LC[97]Decrease[97]
Ocellated crake Rufirallus schomburgkii 50,000-499,999[98] LC[98] Decrease[98] IUCN/BirdLife International place species in genus Micropygia.
Uniform crakeAmaurolimnas concolor50,000-499,999[99]LC[99]Decrease[99]
Paint-billed crake Mustelirallus erythrops 50,000-499,999[100] LC[100] ?[100] IUCN/BirdLife International place species in genus Neocrex.
Ruddy crakeLaterallus ruber50,000-499,999[101]LC[101]Steady[101]
Mangrove railRallus longirostris50,000-500,000[102]LC[102]Decrease[102]
Ash-throated crake Mustelirallus albicollis 66,700-667,000[103] LC[103] Steady[103] Total population is estimated to be 99,999-999,999 individuals.[103]

IUCN/BirdLife International place species in genus Porzana.

Giant wood-rail Aramides ypecaha 66,700-667,000[104] LC[104] Steady[104] Total population is estimated to be 100,000-1,000,000 individuals.[104]
King rail Rallus elegans 69,000[105] NT[105] Decrease[105]
WekaGallirallus australis71,000-118,000[106]VU[106]Decrease[106]Total population is estimated to be 107,000-177,000 individuals.[106]
Spot-flanked gallinule Porphyriops melanops 73,300-735,000[107] LC[107] Steady[107] Total population is estimated to be 110,001-1,102,500 individuals.[107]
Little crake Zapornia parva 80,000-207,000[108] LC[108] ?[108] Total population is estimated to be 120,000-310,000 individuals.[108]
White-winged trumpeter

(Pale-winged trumpeter)

Psophia leucoptera 100,000-499,999[109] LC[109] Decrease[109] Some authorities, including IUCN/BirdLife International, split an additional species, the ochre-winged trumpeter, from this one.[110]

The IOC maintains ochre-winged trumpeter as a subspecies of the congeneric grey-winged trumpeter.[1]

Virginia rail Rallus limicola 100,000-499,999[111] LC[111] Steady[111] Best estimate for number of mature individuals is 240,000.[111]

Note that IOC taxonomy splits an additional species, the Ecuadorian rail, from this species.[1]

IUCN/BirdLife International maintain both species within R.limicola.[112]

Purple gallinule

(American purple gallinule)

Porphyrio martinicus 100,000-499,999[113] LC[113] Steady[113] Best estimate for number of mature individuals is 390,000.[113]
Red-knobbed coot Fulica cristata 171,000-541,000[114] LC[114] Increase[114] Total population is estimated to be 257,000-811,000 individuals. European subpopulation is considered critically endangered.[114]
Watercock Gallicrex cinerea > 201,000[115] LC[115] Decrease[115] IUCN/BirdLife International do not report an estimate; however, given the reported "c. 100,000 breeding pairs and c. 1,000 individuals on migration in Taiwan" a minimum value can be intuited.[115]
Clapper rail Rallus crepitans 210,000[116] LC[117] Decrease[117] IUCN/BirdLife International do not report a population estimate, citing recent taxonomic splits.[117]

Estimate is available through Partners in Flight.[116]

Spotted crake Porzana porzana 213,000-307,000[118] LC[118] Decrease[118] Total population is estimated to be 320,000-460,000 individuals.[118]
Demoiselle craneGrus virgo230,000-261,000[119]LC[119]Increase[119]Values given are for total population.[119]

IUCN/BirdLife International place species in genus Anthropoides.

Sandhill crane Antigone canadensis 450,000-550,000[120] LC[120] Increase[120] Total population is estimated to be 670,000-830,000 individuals.[120]

IUCN/BirdLife International place this species in genus Grus.

Common craneGrus grus479,000-572,000[121]LC[121]Increase[121]Total population is estimated to be 718,160-858,240 individuals.[121]
Baillon's crake Zapornia pusilla 500,000-999,999[122] LC[122] ?[122]
SungrebeHeliornis fulica500,000-4,999,999[123]LC[123]Decrease[123]
Grey-breasted crake Laterallus exilis 500,000-4,999,999[124] LC[124] Decrease[124]
White-throated crake Laterallus albigularis 500,000-4,999,999[125] LC[125] Steady[125]
Purple swamphen

(Western swamphen)

Porphyrio porphyrio 520,000-1,940,000[126] LC[126] ?[126] Total population is estimated to be 779,996-2,909,994 individuals.[126]

Note that IOC taxonomy splits five additional species, the African swamphen, grey-headed swamphen, black-backed swamphen, Philippine swamphen, and Australasian swamphen from this species.[1]

IUCN/BirdLife International maintain all species within P. porphyrio.[112]

Western water rail

(Water rail)

Rallus aquaticus 628,000-1,300,000[127] LC[127] ?[127]
Red-gartered cootFulica armillata667,000[128]LC[128]?[128]Total population is estimated to be 1.0 million individuals.[128]
White-winged cootFulica leucoptera667,000[129]LC[129]Steady[129]Total population is estimated to be 1.0 million individuals.[129]
Black crakeZapornia flavirostra667,000[130]LC[130]Steady[130]Total population is estimated to be 1.0 million individuals.[130]
LimpkinAramus guarauna672,000-687,000[131]LC[131]Steady[131]Total population is estimated to be 1,008,749-1,029,799 individuals.[131]
Plumbeous railPardirallus sanguinolentus683,000-1,340,000[132]LC[132]Steady[132]Total population is estimated to be 1,024,998-2,009,998 individuals.[132]
Sora Porzana carolina 1,000,000-9,999,999[133] LC[133] Steady[133] Best estimate for number of mature individuals is 4.4 million.[133]
Common gallinule Gallinula galeata 1,000,000-9,999,999[134] LC[134] ?[134] Best estimate for number of mature individuals is 5.1 million.[134]
CorncrakeCrex crex3,270,000-5,270,000[135]LC[135]Decrease[135]Total population is estimated to be 4.9-7.9 million individuals.[135]
Grey-cowled wood-railAramides cajaneus5,000,000-50,000,000[136]LC[136]Steady[136]
Eurasian coot Fulica atra 5,300,000-6,500,000[137] LC[137] Increase[137] Total population is estimated to be 7.95-9.75 million individuals.[137]
American cootFulica americana7,100,000[138]LC[138]Decrease[138]
Common moorhenGallinula chloropus9,069,000-13,527,000[139]LC[139]Decrease[139]
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Species without population estimates

More information Common name, Binomial name ...
Common name Binomial name Population Status Trend Notes Image
Brown-banded rail

(Luzon rail)

Lewinia mirifica unknown[140] DD[140] ?[140] Species is only known from a handful of records; not enough data to make an assessment of status or population.[140]
Colombian crake Mustelirallus colombianus unknown[141] DD[141] ?[141] Range has not been completely identified, and too few observations exist to make an assessment of status or population.[141]

IUCN/BirdLife International place species in genus Neocrex.

Snoring railAramidopsis plateniunknown[142]VU[142]Decrease[142]
Invisible railHabroptila wallaciiunknown[143]VU[143]Decrease[143]
Green-winged trumpeter

(Dark-winged trumpeter)

Psophia viridis unknown[144] VU[144] Decrease[144] Some authorities, including IUCN/BirdLife International, split an additional two species from this one: black-winged trumpeter[31] (in the table above) and olive-winged trumpeter (IUCN-EN), whose population has not been quantified.[145]

The IOC maintains all three species within P. viridis.[1]

Band-bellied crake Zapornia paykullii unknown[146] NT[146] Decrease[146]
Isabelline bush-hen Amaurornis isabellina unknown[147] LC[147] ?[147]
Pale-vented bush-hen Amaurornis moluccana unknown[148] LC[148] ?[148]
Philippine bush-hen

(Plain bush-hen)

Amaurornis olivacea unknown[149] LC[149] ?[149]
White-breasted waterhenAmaurornis phoenicurusunknown[150]LC[150]?[150]
Red-winged wood-rail Aramides calopterus unknown[151] LC[151] ?[151]
Little wood-rail Aramides mangle unknown[152] LC[152] ?[152]
Grey-throated rail Canirallus oculeus unknown[153] LC[153] Decrease[153]
Swinhoe's railCoturnicops exquisitusunknown[154]LC[154]Decrease[154]
Chestnut rail Eulabeornis castaneoventris unknown[155] LC[155] ?[155]
Andean coot Fulica ardesiaca unknown[156] LC[156] ?[156]
Dusky moorhen Gallinula tenebrosa unknown[157] LC[157] ?[157]
Blue-faced railGymnocrex rosenbergiiunknown[158]LC[158]Decrease[158]Population size is unknown, but it is not expected to be small.[158]
Bare-eyed rail Gymnocrex plumbeiventris unknown[159] LC[159] ?[159]
Nkulengu rail Himantornis haematopus unknown[160] LC[160] Decrease[160]
Barred rail Hypotaenidia torquata unknown[161] LC[161] ?[161]
Guadalcanal rail

(Woodford's rail)

Hypotaenidia woodfordiunknown[162]LC[162]?[162]Population was previously estimated to be 2,500-9,999 mature individuals, but this was not based on any data. Current population is unknown pending surveys.[162]
Lewin's rail Lewinia pectoralis unknown[163] LC[163] ?[163]
Slaty-breasted rail Lewinia striata unknown[164] LC[164] ?[164]
New Guinea flightless rail Megacrex inepta unknown[165] LC[165] Decrease[165]
Madagascar forest railMentocrex kioloidesunknown[166]LC[166]Decrease[166]Population was previously estimated to be 1,000-2,000 individuals, but this is likely a large underestimate. Population is now considered unknown, pending more data.[166]
White-browed crake Poliolimnas cinereus unknown[167] LC[167] ?[167] IUCN/BirdLife International give the binomial name Amaurornis cinerea.
Australian crake Porzana fluminea unknown[168] LC[168] ?[168]
Grey-winged trumpeter Psophia crepitans unknown[169] LC[169] Decrease[169]
Forbes's forest rail Rallicula forbesi unknown[170] LC[170] ?[170]
White-striped forest rail Rallicula leucospila unknown[171] LC[171] Decrease[171]
Mayr's forest rail Rallicula mayri unknown[172] LC[172] Steady
Chestnut forest rail Rallicula rubra unknown[173] LC[173] ?[173]
Slaty-legged crake Rallina eurizonoides unknown[174] LC[174] Decrease[174]
Red-legged crake Rallina fasciata unknown[175] LC[175] ?[175]
Red-necked crake Rallina tricolor unknown[176] LC[176] ?[176]
African rail Rallus caerulescens unknown[177] LC[177] ?[177]
Eastern water rail

(Brown-cheeked rail)

Rallus indicus unknown[178] LC[178] ?[178]
Chestnut-headed crake Rufirallus castaneiceps unknown[179] LC[179] ?[179]
Black-banded crake Rufirallus fasciatus unknown[180] LC[180] ?[180] IUCN/BirdLife International give the binomial name Porzana fasciata.
Russet-crowned crake Rufirallus viridis unknown[181] LC[181] ?[181]
Striped flufftail Sarothrura affinis unknown[182] LC[182] Decrease[182]
Streaky-breasted flufftailSarothrura boehmiunknown[183]LC[183]?[183]Population has not been quantified due to the cryptic nature of the species, but population is not expected to be small.[183]
Buff-spotted flufftail Sarothrura elegans unknown[184] LC[184] ?[184]
White-spotted flufftail Sarothrura pulchra unknown[185] LC[185] Decrease[185]
Red-chested flufftail Sarothrura rufa unknown[186] LC[186] Decrease[186]
Tasmanian native-hen Tribonyx mortierii unknown[187] LC[187] ?[187]
Brown crake Zapornia akool unknown[188] LC[188] ?[188]
Black-tailed crake Zapornia bicolor unknown[189] LC[189] ?[189]
Ruddy-breasted crake Zapornia fusca unknown[190] LC[190] ?[190]
Spotless crake Zapornia tabuensis unknown[191] LC[191] ?[191]
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