Monday, August 26, 2013

Raptors of the Week: Gyrfalcon

Falco rusticolus

The largest of the North American falcons lives mainly in the Arctic; it is of accidental occurrence in Iowa, with fewer than ten documented reports. The first acceptable records, from 1992 and 1993, were of gray-phase immature birds.

The Raptors of Iowa, paintings by James F. Landenberger

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