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The great horned owl's eye contains both rods and cones like most species that see in color, but the vision of a great horned owl closely resembles that of many other nocturnal species. The peak wavelengths that are observed by the cones is 555 nm and the research suggests that the great horned owl has relatively weak color vision, especially ...
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.
Bird ear tufts are skin projections covered in feathers found in some bird species, most notably various species of owl, vaguely resembling mammalian ears, but unrelated to the animal's hearing. Theories about their function range from improved ability to camouflage, [ 2 ] aiding in finding a suitable mate, [ 3 ] [ 4 ] to giving a more ...
A great horned owl with wet feathers, waiting out a rainstorm The disadvantage of such feather adaptations for barn owls is that their feathers are not waterproof. [ 24 ] The adaptations mean that barn owls do not use the uropygial gland , informally the "preen" or "oil" gland, as most birds do, to spread oils across their plumage through ...
The barn owl has the most visually prominent facial disc, measuring about 110 mm (Simmons), while the great grey owl has the largest disc of any bird. Due to shared inner ear anatomy with barn owls, [ 1 ] it is theorized that the feathered dinosaur Mononykus may also have had a facial disc.
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 ...
This clip of a Great Gray Owl and her owlets is actually part of a longer video made by a family on YouTube a few years ago in which two teenagers observe and document the birth, caretaking, and ...
Great Owl can refer to: several species of owl the North African pharaoh eagle-owl (particularly in ancient or antiquarian texts) the great grey owl; the American great horned owl; Wielka Sowa, the highest peak in the Owl Mountains, Poland; The Great Owl, a character in The Secret of NIMH