Owl Documentary - Fascinating Facts About Owls (New Documentaries)
The vast majority of the roughly 200 species of owls are so-called true owls which possess large heads with round faces short tails and muted feathers with mottled patterns. The remainder accounting for a little over a dozen species are barn owls which can be distinguished by their heart-shaped faces long legs equipped with powerful talons and moderate size. With the exception of the common barn owl—which has a worldwide distribution—the most familiar owls at least to residents of North America and Eurasia are the true owls.
Evolution has an efficient way of relegating animals to particular niches: because other carnivorous birds (like hawks and eagles) hunt during the day most owls have adapted to hunting at night. The dark coloration of owls makes them nearly invisible to their prey—which consists of insects small mammals and other birds—and their wings are structured so as to beat in almost complete silence. These adaptations combined with their enormous eyes makes owls some of the most efficient night hunters on the planet wolves and coyotes not excluded.
One of the most remarkable things about owls is the way they move their entire heads when looking at something rather than simply moving their eyes in their sockets like most other vertebrate animals. The reason for this is that owls need large forward-facing eyes to gather in scarce light during their nocturnal hunts and evolution couldn't spare the musculature to allow these eyes to rotate. Instead owls have astonishingly flexible necks that allow them to turn their heads three-quarters of a circle or 270 degrees—compared to about 90 degrees for the average human being!