Research topic: bird

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bird

The Columbia Encyclopedia, Sixth Edition
bird warm-blooded, egg-laying, vertebrate animal having its body covered with feathers and its forelimbs modified into wings , which are used by most birds for flight. Birds compose the class Aves (see Chordata ). There are an estimated 9,000 living species. Birds are believed to be extant members of a group of dinosaurs called maniraptors (other maniraptors include Velociraptor and Oviraptor ). They share with dinosaurs such characteristics as a foot with three primary toes and one accessory toe held high in back. Early avians include such primitive birds as Ar... Read more
bird

bird / bərd / • n. 1. a warm-blooded egg-laying vertebrate distinguished by the possession of feathers, wings, and a beak and (typically) by being able to fly. • Class Aves. ∎  an animal of this type that is hunted for sport or used for food: ...

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bird

bird Any one of c. 8600 species of feathered vertebrates, which occupy most natural habitats from deserts and tropics to polar wastes. Birds are warm-blooded and have forelimbs modified as wings, hind-limbs for walking, and jaws elongated into a toothless beak. They lay eggs (usually in ...

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Attenborough - Lyre Bird

Free newspaper and magazine articles

Free Article Ron Bird wears wings at Bank of Southern California. (Ron Bird is the bank president) (Profile)
Free Article Larry Bird: The Making of an American Sports Legend.
Free Article What is the Risk of a Bird Strike at Your Airfield?

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