We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Crows are often considered among the most intelligent bird species in the world, due in ...

Crows are able to look at a handful of four-sided shapes and correctly distinguish those that exhibit geometric regularity from those that don't, according to a provocative new study. It's the first ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Add Yahoo as a preferred source to see more of our stories on Google. Ashley Cooper / Getty Images Crows can often intimidate other smaller birds if they're properly deterred from your feeder. Some ...