Birds

Ibon

Birds (IPA: /bərd/) are group of warm-blooded reptiles constituting the class Aves, 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. Most birds are fully flight, some largest species were flightless for their big size, small wings for flippers or long legs for running.


Birds are closest relative of pterosaurs and crocodiles as living theropods. These are feathered theropod dinosaurs and constitute the only known living dinosaurs. These are social species pass on knowledge across generations, which is considered a form of culture.


Birds are social, communicating with visual signals, calls, and songs, and participating in such behaviours as cooperative breeding and hunting, flocking, and mobbing of predators.

List of Birds

Lithornithiformes


Struthioniformes


Aepyornithiformes (Elephant Birds)


Apterygiformes (Kiwis)


Casuariiformes (Cassowaries and Emus)


Rheiformes (Rheas)


Dinornithiformes (Moa)


Tinamiformes (Tinamous)


Pangalloanserae


Odontopterygiformes


Gastornithiformes


Vegaviiformes


Presbyornithidae


Anseriformes


Pangalliformes (unknown classification)


Gallinuloididae


Paraortygidae


Quercymegapodiidae


Sylviornithidae (Du)


Galliformes


†Paraortygidae


Megapodiidae (Megapodes)


Cracidae (Chachalacas, Guans, and Curassows)


Numididae (Guineafowls)


Odontophoridae (New World Quails)


Gallidae/ Phasianidae (Pheasants, Chickens, Partridges, Peacocks, and True Quails)


Neoaves