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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.
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 ]
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.
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 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 ...
Cross sectioned great grey owl specimen showing the extent of the body plumage, Zoological Museum, Copenhagen Skeleton of a Strigidae owl. While typical owls (hereafter referred to simply as owls) vary greatly in size, with the smallest species, the elf owl, being a hundredth the size of the largest, the Eurasian eagle-owl and Blakiston's fish owl, owls generally share an extremely similar ...
Red owl: Tyto soumagnei (Grandidier, A, 1878) 10 Western barn owl: Tyto alba (Scopoli, 1769) 11 American barn owl: Tyto furcata (Temminck, 1827) 12 Eastern barn owl: Tyto javanica (Gmelin, JF, 1788) 13 Andaman masked owl: Tyto deroepstorffi (Hume, 1875) 14 Ashy-faced owl: Tyto glaucops (Kaup, 1852) 15 African grass owl: Tyto capensis (Smith, A ...
White-throated needletail: Hirundapus caudacutus: Apodidae: 169 km/h 105 mph [3] [note 2] 169 km/h 105 mph High-speed wings Common swift: Apus apus: Apodidae [13] 111.6 km/h 69.3 mph [3] 166 km/h 103 mph High-speed wings Eurasian hobby: Falco subbuteo: Falconidae [14] 159 km/h 99 mph Can sometimes outfly the swift as it eats them and catches ...