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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.
Compared to other owls of similar size, the barn owl has a much higher metabolic rate, requiring relatively more food. Relative to its size, barn owls consume more rodents. Studies have shown that an individual barn owl may eat one or more voles (or their equivalent) per night, equivalent to about fourteen percent of the bird's bodyweight.
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 ...
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 ...
This fossil is from a taxon similar in size to the great horned owl (B. virginianus) or the great grey owl (S. nebulosa). [ 11 ] The Sinclair owl ( Bubo sinclairi ) from Late Pleistocene California may have been a paleosubspecies of the great horned owl, [ 12 ] while the roughly contemporary Bubo insularis of the central and eastern ...
Kate Winslet still remembers how it felt to be body shamed.. In a 60 Minutes interview released on Sunday, Dec. 1, the Oscar winner, 49, reflected on her career and fought back tears at one point ...
The average clutch size, attributed as 2.7, was the lowest of any European owl per one study. One species was attributed with an even lower clutch size in North America, the great grey owl with a mean of 2.6, but the mean clutch size was much higher for the same species in Europe, at 4.05. [111]
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