Math isn't just a human thing. All kinds of animals, from African grey parrots to chimpanzees, are thought to have some kind of mathematical ability, but it can be hard to test. Now, a new study finds ...

The crow stared at the screen, as it had many times before. Six shapes appeared. Five were neat, balanced, regular; one was not. The crow tilted its head, paused, and tapped the odd one out. A chime ...

A study finds that carrion crows can be taught to count and make vocalizations that indicate the number counted, much in the same way that human... Crows can count out loud like human toddlers — when ...