Craniata, subphylum Craniata, subphylum Vertebrata, Vertebrata - fishes; amphibians; reptiles; birds; mammals

bird - warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

genus Protoavis - extinct primitive birds of the Triassic period; 70 million years before archaeopteryx

Archaeornithes, subclass Archaeornithes - primitive reptile-like fossil birds of the Jurassic or early Cretaceous

Ratitae, superorder Ratitae - used in former classifications to include all ratite bird orders

order Struthioniformes, Struthioniformes - a ratite bird order: ostriches and related extinct birds; known from the Pleistocene onward

Casuariiformes, order Casuariiformes - a ratite bird order: cassowaries and emus

Apterygiformes, order Apterygiformes - a ratite bird order: flightless ground birds having vestigial wings and long bills and small eyes: kiwis

order Rheiformes, Rheiformes - a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas

Aepyorniformes, order Aepyorniformes - huge extinct flightless birds: elephant birds

Dinornithiformes, order Dinornithiformes - a ratite bird order: recently extinct flightless birds of New Zealand

Insessores, order Insessores, perching bird, percher - a bird with feet adapted for perching (as on tree branches); this order is now generally abandoned by taxonomists

order Passeriformes, Passeriformes - largest order of birds comprising about half the known species; rooks; finches; sparrows; tits; warblers; robins; wrens; swallows; etc.; the four suborders are Eurylaimi and Tyranni and Menurae and Oscines or Passeres

order Raptores, Raptores - term used in former classifications; erroneously grouped together birds of the orders Falconiformes and Strigiformes

Falconiformes, order Falconiformes - chiefly diurnal carnivorous birds having hooked beaks and long talons with opposable hind toe: falcons; hawks; eagles; ospreys; caracaras; vultures

young bird - a bird that is still young

order Strigiformes, Strigiformes - owls

Galliformes, order Galliformes - pheasants; turkeys; grouse; partridges; quails; chickens; brush turkeys; curassows; hoatzins

Columbiformes, order Columbiformes - sand grouse; pigeons; doves; extinct dodos and solitaires

order Psittaciformes, Psittaciformes - an order of birds including parrots and amazons and cockatoos and lorikeets and lories and macaws and parakeets

Cuculiformes, order Cuculiformes - cuckoos; touracos; etc.

Coraciiformes, order Coraciiformes - rollers; kingfishers; hornbills; hoopoes; motmots; bee eaters; todies

order Picariae, Picariae - term used in some classifications as nearly equivalent to the order Coraciiformes

Apodiformes, order Apodiformes - swifts; hummingbirds

Caprimulgiformes, order Caprimulgiformes - goatsuckers; frogmouths; oilbirds

order Piciformes, Piciformes - woodpeckers; jacamars; puffbirds; barbets; honey guides; toucans

order Trogoniformes, Trogoniformes - trogons

Anseriformes, order Anseriformes - ducks; geese; swans; screamers

Ciconiiformes, order Ciconiiformes - order of chiefly tropical marsh-dwelling fish-eating wading birds with long legs and bills and (except for flamingos) unwebbed feet: herons; storks; spoonbills; flamingos; ibises

Gruiformes, order Gruiformes - inland marsh-dwelling birds with long legs and necks and bills that wade in water in search of food: cranes; rails; bustards

Charadriiformes, order Charadriiformes - large diverse order of aquatic birds found along seacoasts and inland waters: shorebirds and coastal diving birds; most feed on anima life

Gaviiformes, order Gaviiformes - large aquatic birds: loons and some extinct forms

Colymbiformes, order Colymbiformes, order Podicipediformes, order Podicipitiformes, Podicipediformes, Podicipitiformes - grebes