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Birds (class Aves or clade Avialae) are feathered, winged, two-legged, warm-blooded, egg-laying vertebrates. Aves ranks as the tetrapod class with the most living species, approximately ten thousand. Extant birds belong to the subclass Neornithes, living worldwide and ranging in size from the 5 cm (2 in) Bee Hummingbird to the 2.75 m (9 ft) Ostrich. The fossil record indicates that birds emerged within the theropod dinosaurs during the Jurassic period, around 150 million years ago. Most researchers agree that modern-day birds are the only living members of the Dinosauria clade.— Excerpted from Bird on Wikipedia, the free encyclopedia.
A collage of 18 photographs of different birds.


Photograph of an Osprey landing next to its nest in a tree
Osprey landing
Photograph of two Merops perched on a branch, one in the act of catching an insect in flight
Merops feeding

Habits and behaviour[edit]

Photograph of a bid perched on the side of a nest with several chicks
Black Redstart with young
Photograph of several goslings sheltering under the wings of their mother
Goose and goslings

Instinct and Intelligence[edit]







Birds by location[edit]

Birds by type[edit]

Sorted by order (with broad example).

Anseriformes (Waterfowl)[edit]

Photograph of a duck in flight
Anseriformes: Male Mallard, British Columbia

Apodiformes (Swifts & Hummingbirds)[edit]

Caprimulgiformes (Nightjars)[edit]

Charadriiformes (Gulls)[edit]

Photograph of a gull in flight
Charadriiformes: Black-headed Gull, London

Ciconiiformes (Storks)[edit]

Columbiformes (Doves & Pigeons)[edit]

Close-up photograph of the head and neck of a pigeon looking left
Columbiformes: Feral Rock Pigeon, Santa Barbara

Coraciiformes (Kingfishers)[edit]

Cuculiformes (Cuckoos & Turacos)[edit]

Dinornithiformes (Moa)[edit]

Falconiformes (Eagles & Hawks)[edit]

Close-up photograph of the head a Golden Eagle looking right
Falconiformes: Golden Eagle, near Innsbruck

Galliformes (Fowl)[edit]

Gaviiformes (Divers)[edit]

Passeriformes (Songbirds)[edit]

Photograph of a blue tit standing on a twig
Passeriformes: Blue Tit
Photograph of a nuthatch standing on, and eating sunflower seeds from, an open hand
Passeriformes: Wood Nuthatch

Pelecaniformes (Pelicans)[edit]

Photograph of a pelican standing on grass
Pelecaniformes: Dalmatian Pelican, Mulhouse

Phaethontiformes (Tropicbirds)[edit]

Phoenicopteriformes (Flamingos)[edit]

Piciformes (Woodpeckers)[edit]

Procellariiformes (Albatrosses & Petrels)[edit]

Psittaciformes (Parrots)[edit]

Strigiformes (Owls)[edit]

Struthioniformes (Ostriches)[edit]

Suliformes (Cormorants & Gannets)[edit]

External links[edit]