Bird - Wikipedia
WebBirds live worldwide and range in size from the 5.5 cm (2.2 in) bee hummingbird to the 2.8 m (9 ft 2 in) common ostrich. There are over 11,000 living species, more than half of which are passerine, or "perching" birds.
Bird - Simple English Wikipedia, the free encyclopedia
WebBirds (Aves) are a group of animals with backbones. They evolved from dinosaurs. Technically, birds are dinosaurs. Birds are warm blooded. Their feathers help prevent loss of body heat. Modern birds do not have teeth. They have beaked jaws. Birds lay hard-shelled eggs. They have a high metabolic rate and a strong but lightweight skeleton.
List of birds - Wikipedia
WebList of birds. Penguins. Ostriches. This article lists living orders and families of birds. The links below should then lead to family accounts and hence to individual species. The passerines (perching birds) alone account for well over 5,000 species. In total there are about 10,000 species of birds described worldwide, though one estimate of ...
Origin of birds - Wikipedia
WebThe scientific question of within which larger group of animals birds evolved has traditionally been called the "origin of birds". The present scientific consensus is that birds are a group of maniraptoran theropod dinosaurs that originated during the Mesozoic Era.
Eagle - Wikipedia
WebEagle is the common name for the golden eagle, bald eagle, and other birds of prey in the family Accipitridae.Eagles belong to several groups of genera, some of which are closely related.True eagles comprise the genus Aquila.Most of the 68 species of eagles are from Eurasia and Africa. Outside this area, just 14 species can be found—two in North America, nine in Central and South America ...
Bird anatomy - Wikipedia
WebBird anatomy, or the physiological structure of birds' bodies, shows many unique adaptations, mostly aiding flight.Birds have a light skeletal system and light but powerful musculature which, along with circulatory and respiratory systems capable of very high metabolic rates and oxygen supply, permit the bird to fly. The development of a beak has led to evolution of a specially adapted ...
Bird | Description, Species, Classification, Types, & Facts
WebMay 1, 2024 · Bird, any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded vertebrates more related to reptiles than mammals. Learn more about birds in this article.
Bird - Wikiwand
WebBirds live worldwide and range in size from the 5.5 cm (2.2 in) bee hummingbird to the 2.8 m (9 ft 2 in) common ostrich. There are over 11,000 living species, more than half of which are passerine, or "perching" birds.
Origin of birds - Simple English Wikipedia, the free encyclopedia
WebThe origin of birds is one of the most interesting questions in palaeontology and evolution. Birds evolved from theropod dinosaurs during the Mesozoic era. Thomas Henry Huxley ("Darwin's bulldog"), who was a comparative anatomist, made a …
Songbird - Simple English Wikipedia, the free encyclopedia
WebSongbirds are the main group of birds in the order Passeriformes. They are the suborder Passeri, sometimes called 'oscines' (Latin for songbird). They are a genuine clade. There are about 4000 species of songbird. Their syrinx (vocal organ) is able to produce varied and beautiful singing.
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