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+฀40฀+ swainson’s hawk Buteo swainsoni This large buteo is a rare migrant and a very rare nester in Iowa. During migration , it is detected by mid April and is mostly gone after October. It is basically a Great Plains species, and its uncommon nest records occur in the northern and western parts of the state. It sometimes migrates in large flocks, although not as extensive as flocks of the broad-wing. Young Swainson’s hawks can be notoriously hard to identify. A field aid is the slight dihedral attitude of the wings when soaring. qr +฀41฀+ ...

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