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The average global population of all mature birds is estimated to be on the order of 100 billion individuals. [1] [2] [3] The total population including younglings is somewhat higher during the breeding season of each species. [3] This list is incomplete, because experts have not estimated all bird numbers.
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
The table contains a list of the largest birds living on this planet by wingspan, at maximum, assumed to be reliable by experts and verified records, at least 3 m (9 ft 10 in). Rank Image
These doves are one of the most harvested migratory game birds in North America. Hunters killed approximately 11 million mourning doves in 2020 and 9 million the following year, according to the U ...
It is the largest and least populous of the five species of true accipitrid to occur as a breeding species in both the Palearctic and the Nearctic. [5] For centuries, this species has been one of the most highly regarded birds used in falconry. Because of its hunting prowess, the golden eagle is regarded with great mystic reverence in some ...
This article lists living orders and families of 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.
Most maritime surveys use strip transect and distance sampling to measure density; this is then extrapolated over the animal's range. [5] The Galapagos has been counted annually since 1961 by the Galápagos National Park Service. By land and sea, they carry out a full census in ten areas and partial census in four.
There are an additional 146 species whose presence in the United States is only within one or more U.S. territories; some of those species have become extinct. The total number of bird species on the list is 1267 (i.e. the 1120 bird species found in the 50 states and District of Columbia, plus the 146 species found only in the U.S. territories).