According to a recent study conducted by a group of researchers from the Animal Physiology Lab at the University of Tübingen in Germany, crows can count up to four.

According to recent research, crows, a common urban bird, can loudly count up to four, so maybe calling someone "birdbrained" isn't such a bad thing after all.

A new study done by a group of researchers from the animal physiology lab at the University of Tübingen in Germany shows that curious animals can not only count b...