KNOXVILLE, Tenn. — Not all birdbrains are small and Einstein, an African Grey Parrot at Zoo Knoxville, wanted to show off her intelligence in a video released Wednesday. In the video, Adam Patterson ...

Add Yahoo as a preferred source to see more of our stories on Google. African Grey parrots aren't just among the smartest birds in the entire world; they're one of the world's smartest animal species, ...

Acting selflessly to help others in need was long thought to be a trait confined to mammals, in particular humans and great apes. The paper, published in the journal Current Biology on Thursday, ...