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+฀50฀+ aMerican kestrel Falco sparverius This small falcon, often called a sparrow hawk, is common as a summer resident , less so as a winter resident, and often abundant during migration. The Iowa Department of Natural Resources, in conjunction with the Iowa Department of Transportation, initiated a nest box program along interstate highways in the early 1980s, and it is now common to see this species hovering over grassy ditches in pursuit of prey or perched on highway signs. qr +฀51฀+ ...

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