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Instead of moving their eyes, owls swivel their heads to view their surroundings. Owls' heads are capable of swiveling through an angle of roughly 270°, easily enabling them to see behind them without relocating the torso. [29] This ability keeps bodily movement at a minimum, thus reduces the amount of sound the owl makes as it waits for its prey.
The eyes have a field overlap of 50–70%, giving better binocular vision than for diurnal birds of prey (overlap 30–50%). [77] The tawny owl's retina has about 56,000 light-sensitive rods per square millimetre (36 million per square inch); although earlier claims that it could see in the infrared part of the spectrum have been dismissed. [78]
Brahmaea wallichii, also known as the owl moth, is a moth from the family Brahmaeidae, the Brahmin moths, and one of its largest species. It is found in the north of India, Nepal, Bhutan, Myanmar, China, Taiwan, and Japan. The owl moth is nocturnal. [3] The wingspan is about 90–160 millimetres (3 + 1 ⁄ 2 – 6 + 1 ⁄ 4 inches). [4]
The pearl-spotted owlet is one of the smallest owls in Africa with a length of 17 to 21 cm. The females are slightly larger and heavier (100g) than the males (65g). Both males and females have similar plumage colouration. The facial disc is off-white and the eyes are yellow. At the back of the head there are two striking false black 'eyes' with ...
The spotted eagle-owl (Bubo africanus), also known as the African spotted eagle-owl and the African eagle-owl, is a medium-sized species of owl, one of the smallest of the eagle owls. Its length is 45 cm (18 in) and its weight is from 454 to 907 grams (1.0 to 2.0 lb). It has a 100 to 140 cm (39 to 55 in) wingspan. [3]
Close-up of a Caligo wing. The underwing pattern is highly cryptic.It is conceivable that the eye pattern is a generalized form of mimicry.It is known that many small animals hesitate to go near patterns resembling eyes with a light-colored iris and a large pupil, which matches the appearance of the eyes of many predators that hunt by sight.
Burrowing owls have bright eyes; their beaks can be dark yellow or gray depending on the subspecies. They lack ear tufts and have a flattened facial disc. The owls have prominent white eyebrows and a white "chin" patch which they expand and display during certain behaviors, such as a bobbing of the head when agitated.
Night monkeys, also known as owl monkeys or douroucoulis [2] (/ d uː r uː ˈ k uː l i z /), are nocturnal New World monkeys of the genus Aotus, the only member of the family Aotidae (/ eɪ ˈ ɒ t ɪ d iː /). The genus comprises eleven species which are found across Panama and much of South America in primary and secondary forests, tropical ...