Search results
Results from the WOW.Com Content Network
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.
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 ...
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.
Several groups of ungulates have independently reduced or lost side digits on their feet, often leaving one or two digits for walking. That name comes from their hooves, which have evolved from claws several times. For example, horses have one walking digit and domestic bovines two on each foot. Various other land vertebrates have also reduced ...
[141] [144] Being smaller than the great grey owl and Eurasian eagle-owl, it is projected that the Ural owl can live off of less food overall than them. It is estimated that over a 6-month period, a Ural owl needs about 22.8 kg (50 lb) of food while a great grey owl needs about 27.4 kg (60 lb) and an eagle-owl needs about 54.8 kg (121 lb). [80]
Great Gray Owls don’t build their own nests—rather, they take over the nests of other birds like goshawks, or nest in manmade areas like barn eaves or the tops of broken trees, as seen here.
The barred owl (Strix varia), also known as the northern barred owl, striped owl or, more informally, hoot owl or eight-hooter owl, is a North American large species of owl. A member of the true owl family, Strigidae, they belong to the genus Strix , which is also the origin of the family's name under Linnaean taxonomy .
G. kurochkini was approximately the size of the modern mountain pygmy owl, which the fossils were assigned to before being recognized as a distinct species. † La Brea owl [118] [120] † Oraristrix brea: 144 fossil specimens belonging to at least 28 birds. A large owl similar in size to the great grey owl and the great horned owl. Specimens ...