Owls are nocturnal animals. That means they're active at night and sleep during the day. However, not all owls hoot and, of those that do, hoots aren't the only sounds they make. In addition to hoots, owls may chirp, whistle, scream, screech, bark, growl, or shriek. Scientists call these different sounds vocalizations. read more
Here are 10 essential owl facts, ranging from how these predatory birds hunt to how smart they actually are. read more