A new study may cast doubt on the term "birdbrain." Researchers found that one species of crow is equal to kids in understanding the cause-and-effect of water displacement. New Caledonian crows are ...

In Aesop's fable about the crow and the pitcher, a thirsty bird happens upon a vessel of water, but when he tries to drink from it, he finds the water level out of his reach. Not strong enough to ...