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Critically endangered (CR) species face an extremely high risk of extinction in the wild. As of December 2019, the International Union for Conservation of Nature (IUCN) listed 223 critically endangered avian species, including 19 which are tagged as possibly extinct or possibly extinct in the wild.
Of all evaluated avian species, 4% are listed as endangered. No subpopulations of birds have been evaluated by the IUCN. For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of extinction".
Of all evaluated avian species, 76.9% are listed as least concern. No subpopulations of birds have been evaluated by the IUCN. This is a complete list of least concern avian species evaluated by the IUCN. Where possible common names for taxa are given while links point to the scientific name used by the IUCN.
The World Center for Birds of Prey is one of the few places in the world where you can see a California condor, the largest bird in North America. Some of the world’s rarest birds are being ...
The yellow-billed loon is one of the Top 10 rarest birds in the U.S., and they are usually found in coastal areas, not the middle of the desert! These loons are also the largest of the loon family ...
The World's 100 most threatened species [1] is a compilation of the most threatened animals, plants, and fungi in the world. It was the result of a collaboration between over 8,000 scientists from the International Union for Conservation of Nature Species Survival Commission (IUCN SSC), along with the Zoological Society of London . [ 2 ]
Despite decades of intensive protection, the black stilt remains one of the rarest species of wading bird, and one of the most endangered birds in the world. The population may have numbered 500–1000 birds in the 1940s, [5] but began to rapidly decline in the 1950s, and just 68 adults were counted in 1962. [2]
EBird describes the bird as "A large bird of lowland and montane forest on the Sulu Islands, although probably only remaining on Tawi-Tawi. Feeds particularly on fig trees. One of the rarest birds in the world. Entirely black except for a white tail. Has a long, thick black bill, a black casque, and black bare skin around the eye.