Fancy a game of pin the ears on a bird? Alright then, big shot, where are they? Birds use sound as one of their key senses ...

The great horned owl is the most common owl of the Americas, easily recognizable because of the feather tufts on its head. These “plumicorns” resemble horns or, to some, catlike ears.

Dogs also have lots of small muscles in their ears, so they can point them very precisely to work out what direction a sound is coming from and how far away it is. Ah, the barn owl, another great ...