Diurnal (active by day)

Nocturnal  (active by night)

talons

beaks

wings

calls

There are only two eye types in the raptor world .

All raptor species with exception to owls share this sight.
We've all heard people use the phrase "eagle eye," and there is good reason - raptors have exceptional eyesight.
Their eyesight estimated to be four times sharper than humans. They also have dual-focus ability - meaning they can focus their eyes on an object ahead of them and another on the side at the same time.
Daytime eyesight is excellent. However, experts say their nighttime eyesight and hearing is about the same as ours, and their senses of taste and smell are poor.

Owls have predominantly nocturnal tendencies and their eyes have evolved to assist in catching prey in the dark.
All owls have large forward facing eyes giving good stereoscopic vision vital for judging distances, indeed owls have the most forward facing eyes and hence the best stereoscopic vision of all birds.
In smaller species the head often appears flattened so that the eyes can be as widely spaced as possible to increase the stereoscopic effect and this is often further enhanced by bobbing or weaving the head to give a differing perspective known as the parallax effect.

Because of the enormous size and tubular shape, owls are unable to move their eyes in the sockets and to compensate they have a deceptively long flexible neck which enables them to turn their head 270º in either direction horizontally and at least 90º vertically.

E Y E S

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