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The 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.
Birds are a group of warm-blooded vertebrates constituting the class Aves, 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.
The turkey is a large bird in the genus Meleagris, native to North America. There are two extant turkey species: the wild turkey ( Meleagris gallopavo ) of eastern and central North America and the ocellated turkey ( Meleagris ocellata ) of the Yucatán Peninsula in Mexico.
Birds of the World is a powerful resource that brings deep, scholarly content from four celebrated works of ornithology into a single platform where biologists and birders can find comprehensive life history information on birds.
2 days ago · 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.
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.
A comprehensive listing of all the bird species confirmed in the United States follows. It includes species from all 50 states and the District of Columbia as of July 2022. Species confirmed in other U.S. territories are also included with other "as of" dates.
