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Owl's eye close-up, macro photo, Eye of the Short-eared Owl, Asio flammeus.

Owls and eagle owl in the night. Illustration of thermal image.

Close-up of an Eurasian eagle-owl yawning

Barn Owl, tyto alba, Adult in flight, Normandy

$An Owl's daily activity begins with preening, stretching, yawning and combing its head with its claws. The plumage is often ruffled up, and claws and toes are cleaned by nibbling with the beak. The Owl will then leave its roost, sometimes giving a call (especially in breeding season)\n\nLike most owls, the barn owl is nocturnal, relying on its acute sense of hearing when hunting in complete darkness. It often becomes active shortly before dusk and can sometimes be seen during the day when relocating from one roosting site to another. In Britain, on various Pacific Islands and perhaps elsewhere, it sometimes hunts by day. This practice may depend on whether the owl is mobbed by other birds if it emerges in daylight. However, in Britain, some birds continue to hunt by day even when mobbed by such birds as magpies, rooks and black-headed gulls, such diurnal activity possibly occurring when the previous night has been wet making hunting difficult. By contrast, in southern Europe and the tropics, the birds seem to be almost exclusively nocturnal, with the few birds that hunt by day being severely mobbed.\n\nBarn owls are not particularly territorial but have a home range inside which they forage. For males in Scotland this has a radius of about 1 km (0.6 mi) from the nest site and an average size of about 300 hectares. Female home ranges largely coincide with that of their mates. Outside the breeding season, males and females usually roost separately, each one having about three favored sites in which to conceal themselves by day, and which are also visited for short periods during the night. Roosting sites include holes in trees, fissures in cliffs, disused buildings, chimneys and haysheds and are often small in comparison to nesting sites. As the breeding season approaches, the birds move back to the vicinity of the chosen nest to roost.$

Short-eared Owl (Asio flammeus) - nocturnal bird

The tawny owl or brown owl - Strix aluco is a stocky, medium-sized owl commonly found in woodlands across much of the Palearctic.

Face of the Eurasian eagle owl (bubo bubo) also known as European Eagle owl. The eagle-owl is from the higher classification of horned owls and is one of the largest species.

$Taxon name: Powerful Owl (juvenile)\nTaxon scientific name: Ninox strenua\nLocation: Sydney, New South Wales, Australia$

A Great Horned Owl in captivity after being rescued following an injury.

eagle owl isolated on black with one eye closed

The Eurasian eagle-owl wild bird (Bubo bubo) is a species of eagle-owl that resides in much of Eurasia.

Closed up nocturnal bird in silhouette, adult Brown wood-owl, low angle view, half shot, in the night sitting on the branch of tropical tree in nature of tropical moist montane forest, national park in high mountain of northern Thailand.

Eagle Owl soars low over a long grassy meadow

Eurasian eagle-owl (Bubo bubo) sitting high up in a tree in a forest during winter. The bird of prey is resting and looking around in the woodland in Overijssel, Netherlands.

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