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Birds 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 and they are split into 44 orders . More than half are passerine or "perching" birds.
In total there are about 10,000 species of birds described worldwide, though one estimate of the real number places it at almost twice that. [1] The order passerines (perching birds) alone accounts for well over 5,000 species. Taxonomy is very fluid in the age of DNA analysis, so comments are made where appropriate, and all numbers are approximate.
In this list of birds by common name 11,278 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a "†" are extinct.
The two birds repeat this until the male latches onto the female, and they begin to free-fall towards the ground. In one year, a female hawk will lay about five eggs. Both the male and the female guard and care for the eggs for about a month until they hatch.
Eagle is the common name for the golden eagle, bald eagle, and other birds of prey in the family of the 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. [1]
Accipitriformes is one of three major orders of birds of prey and includes the osprey, hawks, eagles, kites, and vultures. Falcons (Falconiformes) and owls (Strigiformes) are the other two major orders and are listed in other articles.
[5] Parrots—along with ravens, crows, jays, and magpies—are among the most intelligent birds, and the ability of some species to imitate human speech enhances their popularity as pets. They form the most variably sized bird order in terms of length; many are vividly coloured and some, multi-coloured.
Galliformes / ˌ ɡ æ l ɪ ˈ f ɔːr m iː z / is an order of heavy-bodied ground-feeding birds that includes turkeys, chickens, quail, and other landfowl.Gallinaceous birds, as they are called, are important in their ecosystems as seed dispersers and predators, and are often reared by humans for their meat and eggs, or hunted as game birds.