Like human eyesight, each eye of the owl observes one target from two positions, but it is processed as one image in the brain. This process, called binocular vision and stereopsis, provides the owl with better depth perception for hunting from a perch high in the trees. The owl can also turn its head nearly 300 degrees, which is almost as good as having eyes in the back of your head. Few people realize that the owl's hearing is almost as acute as its vision. In fact, when hunting, it relies on its hearing as much as its vision.
Owls live mostly in tree holes.
They prey mostly on small rodents. Not all owls hoot. Some screech, some whistle, and still others hiss. The large barred owl is a more common resident to Pennsylvania than other owls and is usually found flying far from civilization, deep in the woods. Lutra canadensis , more widely known as the river otter, is a sleek and silly creature similar to its sea otter cousin.