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

In a nature reserve of southern China, a “horned” creature with over 250 “creamy white” eggs sat on the ground near a stream.

Researchers and citizen scientists took samples of environmental DNA from saliva on backyard hummingbird feeders and agave ...

Many animals show signs of high intelligence, including strong memory, self-awareness and communication skills.

After a century-long absence, the elusive South American tapir has reemerged, sparking hope and excitement among ...