Most birds have eyes at each side of their head. They see a different scene with each eye. But an owl’s eyes are at the front of its head. The owl sees the same scene with both eyes, just as a human does. However, an owl cannot move its eyes in their sockets. In order to see what is beside or behind it, the owl turns its whole head.
An owl's neck has 14 vertebrae, which is twice as many as humans. This allows the owl to turn its head up to 270 degrees left or right from the forward facing position. An owl cannot turn its head full circle as is the common belief.
The stiff feathers around the owls’ eyes act a lot like dish antennas. They reflect sound toward the ear openings. If the sound is louder in one ear than in the other, this tells the owl that the animal is closer on that side. The owl turns its head until the sound is equally loud in both ears. Then it knows it is facing the animal.
An owl can also “hear” the height of a sound. It turns and tilts its head until it gets a perfect “fix.” They hunt mainly for small animals that creep on the ground, and can even locate by sound those animals hiding under snow.