Double Vision

From Neil Simmons

It's fun to see the eyes on the back of a Pygmy owls head. When I'm photographing one it gets tricky knowing which way they are looking. I can't help but chuckle when I hear someone next to me clicking their camera shutter at the wrong time. These eyes on the back of their heads are a defense mechanism warding off predators and making themselves appear larger than they are.

The proper term for this eye mimicry is "ocelli", a diminutive of the Latin "oculus", which means eye, so ocelli are "little eyes".