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The snowy owl (Bubo scandiacus), [4] also known as the polar owl, the white owl and the Arctic owl, [5] is a large, white owl of the true owl family. [6] Snowy owls are native to the Arctic regions of both North America and the Palearctic , breeding mostly on the tundra . [ 2 ]
In ornithological study, the great horned owl is often compared to the Eurasian eagle-owl (Bubo bubo), a closely related species, which occupies the same ecological niche in Eurasia despite its notably larger size. The great horned owl is also compared to the red-tailed hawk (Buteo jamaicensis), with which it often shares similar habitat, prey ...
The larger barn owl (Tyto alba) needs a force of 30 N to release its prey, and one of the largest owls, the great horned owl (Bubo virginianus), needs a force over 130 N to release prey in its talons. [34] An owl's talons, like those of most birds of prey, can seem massive in comparison to the body size outside of flight.
The great grey owl (Strix nebulosa) (also great gray owl in American English) is a true owl, and is the world's largest species of owl by length. It is distributed across the Northern Hemisphere , and it is the only species in the genus Strix found in both Eastern and Western Hemispheres.
Blakiston's fish owl measures 60 to 72 cm (24 to 28 in) in total length, and thus measures slightly less at average and maximum length than the great gray owl (Strix nebulosa), a species which has a significantly lower body mass. [6] [15] The Eurasian eagle-owl (B. bubo) is sometimes considered the largest overall living owl species.
In comparison, the barn owl (Tyto alba), the world's most widely distributed owl species, weighs about 0.5 kg (1.1 lb) and the great horned owl (B. virginianus), which fills the eagle-owl's ecological niche in North America, weighs around 1.4 kg (3.1 lb). [25] Eurasian eagle-owl in captivity
Its eggs are a little over 50 mm (2.0 in) long, and are white and smooth with a slightly grainy texture. The spotted owl is similar in appearance to the barred owl, but has cross-shaped markings on the underparts, whereas the barred owl is alternately barred on the breast and streaked on the belly. Barred owls are larger and grayer than spotted ...
In comparison, the lightest mean prey mass in dietary studies of the great horned owl was 22.5 g (0.79 oz) while the highest was 610.4 g (1.346 lb). [ 17 ] [ 22 ] Most dietary studies place the average weight of Eurasian eagle-owl prey in the zone of 100 to 500 g (0.22 to 1.10 lb), thus the species fits well within the rule of thumb that most ...