Owls are birds of prey. They belong to the families Strigidae (typical owls) and Tytonidae (Barn Owls), and there are at least 200 species. They normally feed on small mammals, insects, fish, and other birds. They do not make nests, instead sheltering inside trees, ground burrows, caves, and barns, or using other birds' old nests. Owls do not live in flocks, but the term for a group of owls is a parliament. Normally, some owls are nocturnal, and owls keep to themselves, but in the wizarding world they serve many needed functions and have many sorts of personalities.