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Birds
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Birds

Aves

Birds (Aves) are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines, sometimes known...

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47 branches of this class, most-observed first · about 11,009 known species

Perching Birds

orderPasseriformes

Waterfowl

orderAnseriformes

Shorebirds and Allies

orderCharadriiformes

Pelicans, Herons, Ibises, and Allies

orderPelecaniformes

Hawks, Eagles, Kites, and Allies

orderAccipitriformes

Pigeons and Doves

orderColumbiformes

Woodpeckers and Allies

orderPiciformes

Cranes, Rails, and Allies

orderGruiformes

Gannets, Cormorants, and Allies

orderSuliformes

Swifts and Hummingbirds

orderApodiformes

Landfowl

orderGalliformes

Parrots

orderPsittaciformes

Falcons and Caracaras

orderFalconiformes

Rollers, Kingfishers, and Allies

orderCoraciiformes

Owls

orderStrigiformes

Grebes

orderPodicipediformes

New World Vultures

orderCathartiformes

Cuckoos

orderCuculiformes

Storks

orderCiconiiformes

Tubenoses

orderProcellariiformes

Hornbills and Hoopoes

orderBucerotiformes

Loons

orderGaviiformes

Nightjars and Allies

orderCaprimulgiformes

Flamingos

orderPhoenicopteriformes

Trogons and Quetzals

orderTrogoniformes

Penguins

orderSphenisciformes

Frogmouths

orderPodargiformes

Bustards

orderOtidiformes

Ostriches

orderStruthioniformes

Cassowaries and Emus

orderCasuariiformes

Turacos

orderMusophagiformes

Mousebirds

orderColiiformes

Tinamous

orderTinamiformes

Potoos

orderNyctibiiformes

Sandgrouse

orderPterocliformes

Tropicbirds

orderPhaethontiformes

Rheas

orderRheiformes

Seriemas

orderCariamiformes

Hoatzins

orderOpisthocomiformes

Kagu and Sunbittern

orderEurypygiformes

Owlet-nightjars

orderAegotheliformes

Kiwis

orderApterygiformes

Oilbirds

orderSteatornithiformes

Cuckoo-Rollers

orderLeptosomiformes

Mesites

orderMesitornithiformes

Moa

orderDinornithiformes

Elephant Birds

orderAepyornithiformes

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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In the old herbals & bestiaries

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In the stacks

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Every page naming Aves in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 3.