A Few Crayons Short Of A Box

Burrowing Owlet in Florida.

An owl's eyes are large in order to improve their efficiency, especially under low light conditions. Their eyes are actually elongated tubes which are held in place by bony structures in the skull called Sclerotic Rings. For this reason, an owl cannot move its eyes and can only look straight ahead. The owl more than makes up for this by being able to turn its head up to 270 degrees left or right from the forward facing position and almost upside down.

Juvenile Burrowing Owls parallax more than the adults, twisting, turning and bobbing their heads to try and get a better look at something and to judge the distance between themselves and the object.