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Falco sparverius
American Kestrels are the smallest falcon in North America. Males weigh between 103 and 120 grams. Females weigh between 126 and 166 grams. The length of the American Kestrel ranges from 19 to 21 centimeters. Their wingspan is between 50 and 60 centimeters. Both sexes have dark eyes, a notched beak, and unfeathered legs. Males have a rust colored back and tail, and blue wings. The tail has a black band. Females are rust colored with black bands on her wings and tail. Both sexes have white patches on their faces. On top of their head is a blue cap, which is usually brighter in males.
American Kestrels nest in tree cavities, woodpecker holes, crevices of buildings, holes in banks, nest boxes or, rarely, old nests of other birds. American Kestrels are highly adaptable and can live just about anywhere, as long as there is some open ground for hunting and places on which to perch and have a good view of the surroundings, such as telephone wires.
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