Page "True owl" Paragraph 3

Because of their nocturnal habits they tend not to exhibit sexual dimorphism in their plumage.

The feathers are soft and the base of each is downy, allowing for silent flight.

The toes and tarsus are feathered in some species, and more so in species at higher latitudes.

Numerous species of owl in the genus Glaucidium and the Northern Hawk-Owl have eye patches on the backs of their heads, apparently to convince other birds they are being watched at all times.

Numerous nocturnal species have ear-tufts, feathers on the sides of the head that are thought to have a camouflage function, breaking up the outline of a roosting bird.

The feathers of the facial disc are arranged in order to increase sound delivered to the ears.

Hearing in owls is highly sensitive and the ears are asymmetrical allowing the owl to localise a sound.

In addition to hearing owls have massive eyes relative to their body size.

Contrary to popular belief, however, owls cannot see well in extreme dark and are able to see fine in the day.