List of birds by population

The population of birds
Lists

Accipitriformes (hawks, eagles, vultures, and kites)
Anseriformes (waterfowl)
Apodiformes (swifts and hummingbirds)
Bucerotiformes (hornbills and hoopoes)
Caprimulgiformes (nightjars and relatives)
Charadriiformes (gulls and relatives)
Ciconiiformes (storks and relatives)
Coliiformes (mousebirds)
Columbiformes (doves and pigeons)
Coraciiformes (kingfishers and relatives)
Cuculiformes (cuckoos and relatives)
Falconiformes (falcons and relatives)
Galliformes (gamebirds)
Gaviiformes (loons or divers)
Gruiformes (cranes and relatives)
Mesitornithiformes (mesites)
Musophagiformes (turacos)
Otidiformes (bustards)
Passeriformes (perching birds)
Pelecaniformes (pelicans and relatives)
Phaethontiformes (tropicbirds)
Phoenicopteriformes (flamingos)
Piciformes (woodpeckers and relatives)
Podicipediformes (grebes)
Procellariiformes (albatrosses and petrels)
Psittaciformes (parrots)
Rheiformes (rheas)
Sphenisciformes (penguins)
Strigiformes (owls)
Struthioniformes (ostriches)
Suliformes (cormorants and relatives)
Tinamiformes (tinamous)
Trogoniformes (trogons and quetzals)
Key
Related
Lists of organisms by population
Lists of mammals by population
List of Late Quaternary prehistoric bird species
List of extinct birds
Lists of birds by region

This is a list of bird species by global population, divided by avian order. 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. Contributing organizations include the IUCN, BirdLife International, and Partners in Flight.

The average global population of all mature birds is estimated to be on the order of 100 billion individuals.[1][2][3] Total species population, including immature individuals, is higher during the breeding season of each species.[3]

This list is incomplete, because experts have not estimated all bird populations. For example, the spectacled flowerpecker was only discovered in 2010, and did not receive its scientific name (Dicaeum dayakorum) until 2019,[4] adding to the other 73 new bird species described by ornithologists from 2000 – 2009.[5][6][7] Global population estimates for many of these at this time would lack accuracy.

All numbers are estimates, because they are made via bird surveys (e.g., point counting) and extrapolating species density estimates made via observation data over a species' known range.[8] Population estimates should be interpreted with a margin of error, even when only one value is provided.

The number of species within a order corresponds to IOC guidance[9] unless otherwise noted. IUCN/Birdlife International taxonomic classifications[10] often differ from the IOC; for specific disagreements, see Order specific pages.

By taxonomy

List by taxonomic order Birds included # of quantified species / # of total species (%)1 Example of less common species Example of more common species
Accipitriformes Hawks, eagles, kites, Old World vultures. 180 / 259 (69%) Philippine eagle (CR) Roadside hawk (LC)
Pop: 128-924[11] Pop: 5,000,000-50,000,000[12]
Anseriformes Waterfowl: ducks, geese, swans, screamers. 176 / 178 (99%) White-winged duck (CR)

Mallard (LC)

Pop: 150-450[13] Pop: 17,260,000-19,300,000[14]
Apodiformes Owlet-nightjars, swifts, hummingbirds ? / 497
Apterygiformes Kiwis ? / 5
Bucerotiformes Hornbills, ground hornbills, hoopoes, wood hoopoes. 13 / 74
Caprimulgiformes Nightjars, nighthawks, potoos, poorwills. 34 / 121 Puerto Rican nightjar (EN) Chimney swift (NT)
Pop: 1,400 – 2,000[15] Pop: 15,000,000[16]
Cariamiformes Seriemas. 0 / 2
Cathartiformes New World vultures, condors 5 / 7 (71%)
Casuariiformes Cassowaries, emus. 3 / 4
Charadriiformes Waders, gulls, auks. 268 / 390 Shore dotterel (EN) Thick-billed murre (LC)
Pop: 250[17] Pop: > 22,000,000[18]
Ciconiiformes Storks. 20 / 20 (100%) Storm's stork (EN) White stork (LC)
Pop: 300-1,750[19] Pop: 526,000-588,000[20]
Coliiformes Mousebirds. 0 / 6 (0%)
Columbiformes Doves, pigeons. 94 / 351 Socorro dove (EW) Rock dove (LC)
Pop: 100[21] Pop: 260,000,000[22]
Coraciiformes Kingfishers, hornbills, motmots, bee-eaters. 38 / 184 Narcondam hornbill (EN) Rainbow bee-eater (LC)
Pop: 320 – 340[23] Pop: > 1,000,000[24]
Cuculiformes Cuckoos. 22 / 150 Black-hooded coucal (CR) Common cuckoo (LC)
Pop: 70[25] Pop: 25,000,000 – 100,000,000[26]
Eurypygiformes Kagus, sunbittern. 2 / 2 (100%) Kagu (EN) Sunbittern (LC)
Pop: 250 - 299[27] Pop: 500,000-4,999,999[28]
Falconiformes Falcons and caracaras. 47 / 65 (72%) Mauritius kestrel (EN) American kestrel (LC)
Pop: 140 - 170[29] Pop: 9,200,000[30]
Galliformes Gamebirds. 121 / 302 Bornean peacock-pheasant (EN) Willow ptarmigan (LC)
Pop: 1,000 – 2,499[31] Pop: > 40,000,000[32]
Gaviiformes Loons. 5 / 5 (100%) Yellow-billed loon (NT) Pacific loon (LC)
Pop: 11,000 – 21,000[33] Pop: 930,000 – 1,600,000[34]
Gruiformes Cranes, crakes, rails. 92 / 188 Lord Howe woodhen (EN) American coot (LC)
Pop: 220 – 230[35] Pop: 6,000,000[36]
Leptosomiformes Cuckoo-roller. 0 / 1 (0%)
Mesitornithiformes Mesites. 3 / 3 (100%) White-breasted mesite (VU) Subdesert mesite (VU)
Pop: 5,300[37] Pop: 65,000-110,000[38]
Musophagiformes Turacos. 3 / 23 (13%)
Opisthocomiformes Hoatzin. 0 / 1 (0%)
Otidiformes Bustards, floricans, korhaans. 11 / 26 (42%) Great Indian bustard (CR) Little bustard (NT)
Pop: 50-249[39] Pop: 100,000-499,999[40]
Passeriformes New Zealand wrens, suboscines, oscines, songbirds. 55 / 6533
Pelecaniformes Ibises, spoonbills, herons, egrets, bitterns, shoebills, hamerkops, pelicans. 36 / 118 Flightless cormorant (VU) Red-footed booby (LC)
Pop: 1,679[41] Pop: > 1,000,000[42]
Phaethontiformes Tropicbirds. 3 / 3 (100%) Red-billed tropicbird (LC) White-tailed tropicbird (LC)
Pop: 16,000-30,000[43] Pop: 400,000[44]
Phoenicopteriformes Flamingos. 6 / 6 (100%) Andean flamingo (VU) Lesser flamingo (NT)
Pop: 38,000[45] Pop: 2,220,000 – 3,240,000[46]
Piciformes Woodpeckers, toucans, barbets. 43 / 449 Ivory-billed woodpecker (CR) Great spotted woodpecker (LC)
Pop: 0 – 50[47] Pop: 73,500,000 – 216,000,000[48]2
Podicipediformes Grebes. 22 / 23 (96%)3 New Zealand grebe (LC) Black-necked grebe (LC)
Pop: 1,000 – 5,000[49] Pop: 3,900,000 – 4,200,000[50]
Pterocliformes Sandgrouse. 0 / 16
Procellariiformes Albatrosses, petrels. 116 / 147 New Zealand storm petrel (CR) Short-tailed shearwater (LC)
Pop: < 50[51] Pop: > 23,000,000[52]
Psittaciformes Parrots, cockatoos, macaws. 134 / 403 Kākāpō (CR) Red-tailed black cockatoo (LC)
Pop: 210[53] Pop: > 100,000[54]
Rheiformes Rheas. 1 / 2 (50%)
Sphenisciformes Penguins. 18 / 19 (95%) Galapagos penguin (EN) Macaroni penguin (VU)
Pop: 1,200[55] Pop: 12,600,000[56]
Strigiformes Owls. 72 / 255 Forest owlet (EN) Short-eared owl (LC)
Pop: 70 – 400[57] Pop: > 2,000,000[58]
Struthioniformes Ostriches. 1 / 2 (50%) Somali ostrich (VU) Common ostrich (LC)
Pop: unknown[59] Pop: 300,000-900,000[60]
Suliformes Shags, frigate birds, gannets, cormorants. 28 / 61
Tinamiformes Tinamous. 17 / 46 (37%) Black tinamou (VU) Great tinamou (LC)
Pop: 1,900 – 4,400[61] Pop: 5,000,000 – 49,999,999[62]
Trogoniformes Trogons, quetzals. 14 / 43 (33%) Javan trogon (VU) Collared trogon (LC)

Pop: 2,500 – 9,999[63] Pop: 5,000,000 – 49,999,999[64]


See also

Notes

1.^ Denominator (Total Species in Order) from IOC List of Birds (version 15.1).[9]
2.^ Preliminary estimate.
3.^ IOC recognizes tricolored grebe as a full species; IUCN/BirdLife International do not.[65][66] The latter splits silvery grebe into two species (northern/southern silvery grebe); which the former retains as one species.[65][67] This results in 23 total species regardless, and 22 species with populations quantified.

References

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