When a crow responds to a specific person years after a significant encounter, its behavior suggests that the bird may have ...

Wild American crows can memorize the face of a person who threatened them, pass that knowledge to other crows across more than a kilometer, and maintain the grudge for years. Field experiments at the ...

Add Yahoo as a preferred source to see more of our stories on Google. Most people walk past a crow without a second thought. The crow, however, does not return the favor. It watches, registers, and ...

A trio of animal physiologists at the University of Tübingen, in Germany, has found that at least one species of crow has the ability to recognize geometric regularity. In their study published in the ...

Squares, triangles, circles - these geometric shapes appear everywhere in art and architecture going back all through human history. Geometric regularity seems to be something that the human brain is ...