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A field guide that describes and portrays the differences in the seven subspecies of Canada and Cackling geese in Oregon's Willamette Valley. Useful for pre-field and field use.

Full of nearly 100 photos, written description, and biological information of Oregon’s seven subspecies of geese. The subspecies include the Cackler, Aleutian, Taverner, Lesser, Dusky, Vancouver, and Western. And two additional species of geese, the Lesser Snow goose and the Greater White-fronted goose.