This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. As the global avian extinction crisis accelerates, the loss of large-bodied birds is ...

There are roughly 11,000 bird species around the world and some 2,000 of them can be found in Colombia, a country with ...

A Haast’s eagle attacks a moa pair. John Megahan, PLOS Biology, 3(1): e20 via Wikipedia under CC By 2.5 Evolution has a fondness for big birds. During the past 66 million years, repeated on different ...

Global bird sightings from citizen scientists and a view into “climate niches” reveal unexpected risks for some birds. The Bohemian waxwing (left) and the chestnut-crowned laughingthrush (right).

Some species that breed over large geographic areas can still be adapted to a fairly narrow range of climates, making them more vulnerable to climate change than previously thought. Also, species with ...