As more and more "historical" checklists are added to the platform, birds we've lost now mingle with those still hanging on.

A bird species found in mainland Europe ... The International Union for Conservation of Nature (IUCN) red list, which officially rules species as extinct, has not done so yet for the slender ...

Despite a costly reintroduction of bald ibexes in Italy, poaching threatens to drive them extinct again during their migration south. The endangered birds had been hunted into extinction throughout ...

Boast and a team of researchers, for example, are using fossilized dung to learn more about the diets of extinct flightless birds called moa that once roamed around New Zealand. Coprolites helped ...