Bird Generally speaking a bird is any member of the class known as Aves that share certain common characteristics and traits. Birds are warm-blooded, bipedal animals whose anatomy is characterized by forelimbs modified through natural selection and evolution to become wings, whose exterior is covered by feathers, and that have, in most cases, hollow bones to assist in flight
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Chirp Mobile Your personal birding log on the field on your mobile.
List and record every sighting on your phone.
- Complete checklist of birds of India, North America, Great Britain, Indonesia and the whole world.
- Nearly 10,000 species of birds listed