How do owls see?
An owl’s eyes are huge so that they can gather more light, thus providing them excellent night vision. In fact, a Great Horned Owl’s eyes are nearly as large as a man’s. Unlike other birds, owl eyes look forward and therefore each eye sees the same object from two different angles. This produces three-dimensional perception, similar to humans, making it easier to detect the distance of prey, perches and branches as they fly about in the dark. Unlike a human, an owl’s eyes are fixed in their sockets and cannot turn. To focus on another object, an owl must swivel its head. It can do this with amazing quickness.
