As the year comes to an end, we’re all about letting go of grudges, right? Holding on to the past sometimes just seems silly. But not if you’re a crow! These clever black birds are the ultimate grudge ...

Ever had a bird outwit you in a game of peek-a-boo? Or maybe one who casually repeats your arguments back at you? Birds that talk are more than party tricks, they’re cognitive marvels. But not all ...