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Birds of the World (BoW) is an online database of ornithological data adapted from the Handbook of the Birds of the World and contemporary reference works, including Birds of North America, Neotropical Birds Online, and Bird Families of the World. [2] The database is published and maintained by the Cornell Lab of Ornithology and collects data ...
List 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 ...
In this list of birds by common name, a total of 10,976 extant and recently extinct (since 1500) bird species are recognised. Species marked with a "†" are extinct. [1
The average global population of all mature birds is estimated to be somewhat less than 90 billion (actually, somewhere between 40 and 130 billion; this too is a rough estimate). The total population including younglings is somewhat higher during the breeding season of each species.
Birds are a group of warm-blooded vertebrates constituting the class Aves (/ ˈeɪviːz /), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Pelicans rank amongst the largest flying birds. The largest species of pelican is the Eurasian Dalmatian pelican (Pelecanus crispus), which can attain a length of 1.83 m (6.0 ft) and a body weight of 15 kg (33 lb). The great white pelican (P. onocrotalus) of Europe and Africa is almost as large.