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Hawk - Wikipedia, the Free Encyclopedia
Wikipedia's information about the hawk.
https://en.wikipedia.org/wiki/Hawk
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Hawk - Bird - Britannica
Any of various small to medium-sized falconiform birds, particularly those in the genus Accipiter, known as the true hawks, and including the goshawks and sparrowhawks.
http://www.britannica.com/animal/hawk-bird
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Hawks Aloft Conservation - Avian Research and Education
Hawks Aloft, Inc. is a non-profit, organization incorporated in 1994 and based in Albuquerque, New Mexico. We work to conserve indigenous wild birds and their habitats through avian research, conservation education, and cooperation with other organizations.
http://hawksaloft.org
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Hawks: Interesting Facts and Species Information
Hawks have a near worldwide distribution. They are members of the same family as kites and eagles. Falcons, ospreys, and vultures are close relatives.
https://www.beautyofbirds.com/hawks.htm
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Red-Tailed Hawks - National Geographic
Learn all you wanted to know about red-tailed hawks with pictures, videos, photos, facts, and news from National Geographic.
http://animals.nationalgeographic.com/animals/birds/red-tailed-hawk
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Red-tailed Hawk - Audubon Field Guide
This is the most widespread and familiar large hawk in North America, bulky and broad-winged, designed for effortless soaring. An inhabitant of open country, it is commonly seen perched on roadside poles or sailing over fields and woods.
https://www.audubon.org/field-guide/bird/red-tailed-hawk
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Red-tailed Hawk, Identification - AllAboutBirds
Learn how to identify Red-tailed Hawk, its life history, cool facts, sounds and calls, and watch videos. This is probably the most common hawk in North America.
https://www.allaboutbirds.org/guide/Red-tailed_Hawk/id
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Sharp-shinned Hawk and Cooper's Hawk - FeederWatch
Sharp-shinned (Accipiter striatus) and Cooper's (Accipiter cooperii) hawks commonly prey on feeder birds, and they are frequently reported by FeederWatchers. Despite their common occurrence, these hawks present a significant identification problem for many beginning and intermediate (and even more advanced!) birders.
http://feederwatch.org/learn/tricky-bird-ids/coopers-hawk-and-sharp-shinned-hawk/
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Cooper's Hawk - Audubon Field Guide
A medium-sized hawk of the woodlands. Feeding mostly on birds and small mammals, it hunts by stealth, approaching its prey through dense cover and then pouncing with a rapid, powerful flight.
https://www.audubon.org/field-guide/bird/coopers-hawk
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Cooper's Hawk, Identification - AllAboutBirds
Learn how to identify Cooper's Hawk, its life history, cool facts, sounds and calls, and watch videos. Among the bird worlds most skillful fliers, Coopers Hawks are common woodland hawks that tear through cluttered tree canopies in high speed pursuit of other birds.
https://www.allaboutbirds.org/guide/Coopers_Hawk/id