Swainson`s hawk (Buteo swainsoni), is a large Buteo hawk of the Falconiformes, sometimes separated in the Accipitriformes like its relatives. This species was named after William Swainson, a British naturalist. It is colloquially known as the grasshopper hawk or locust hawk, as it is very fond of Acrididae (locusts and grasshoppers) and will vora....
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http://en.wikipedia.org/wiki/Swainson`s_hawk
(from the article `hawk`) ...States. The broad-winged hawk (B. platypterus), a crow-sized hawk, gray-brown with a black-and-white-banded tail, is found in eastern North ...
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http://www.britannica.com/eb/a-z/s/194
a migratory hawk, Buteo swainsoni, of western North America, that winters in southern South America.
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https://www.infoplease.com/dictionary/swainsons-hawk
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