As of December 2019, the International Union for Conservation of Nature (IUCN) lists 460 endangered avian species. 4% of all evaluated avian species are listed as endangered. No subpopulations of birds have been evaluated by the IUCN. This is a complete list of endangered 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.