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

The Nicobar Islands are a biodiversity hotspot, home to unique species found nowhere else. Long isolated, these islands have ...

the burrowing owl has seen a sharp decline over the past 150 years. The population is now a small fraction of its former numbers, with the species listed as endangered in Canada, threatened in ...