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Hawks, including the accipitrines, are believed to have vision several times sharper than humans, in part because of the great number of photoreceptor cells in their retinas (up to 1,000,000 per square mm, against 200,000 for humans), a very high number of nerves connecting the receptors to the brain, and an indented fovea, which magnifies the ...
Falconry was once called "hawking", and any bird used for falconry could be referred to as a hawk. [4]Aristotle listed eleven types of ἱέρακες (hierakes, hawks; singular ἱέραξ, hierax): aisalōn (merlin), asterias, hypotriorchēs, kirkos, leios, perkos, phassophonos, phrynologos, pternis, spizias, and triorchēs.
The Accipitriformes (/ æ k ˌ s ɪ p ɪ t r ɪ ˈ f ɔːr m iː z /; from Latin accipiter 'hawk' and formes 'having the form of') are an order of birds that includes most of the diurnal birds of prey, including hawks, eagles, vultures, and kites, but not falcons.
Hawk on Isabela Island, protecting its meal, a dead newborn sea lion pup. This hawk lives mainly on insects such as locusts and giant centipedes, as well as racer snakes (Alsophis spp.), lava lizards (Microlophus albemarlensis), and both native and introduced species of rodents, including Galápagos rice rats (Aegialomys galapagoensis), house mice (Mus musculus), and black rats (Rattus rattus).
Several other colloquial names for the kestrel are also in use, including grasshopper hawk, due to its diet, and killy hawk, due to its distinct call. [9] As noted in the introduction, DNA analysis shows the American kestrel to actually be genetically more closely related to the larger American falcons [2] [3] than to the true kestrels. However ...
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The red-tailed hawk (Buteo jamaicensis) is a bird of prey that breeds throughout most of North America, from the interior of Alaska and northern Canada to as far south as Panama and the West Indies. It is one of the most common members of the genus Buteo. [3]
Broad-winged hawk at Isle Royale National Park Sheepshead Sanctuary South Padre Island - Texas Molting feather pattern, only visible in May/June. The broad-winged hawk is a relatively small Buteo, with a body size from 32 to 44 cm (13 to 17 in) in length and weighing 265 to 560 g (9.3 to 19.8 oz).