Friday, July 29, 2011

Common Buckeye

Erika and I stumbled upon this Common Buckeye as we strolled across River Bend Nature Area's Prairie Circle Trail in Faribault. Ordinarily the buckeye ranges across the southern United States, barely reaching southern Minnesota. They favor open habitats.

This distribution turns out to be more complicated. Buckeyes winter and then breed in the deep south. Subsequent generations migrate north. During some summers, successive generations over-shoot the normal range, even reaching southern Canada. In the fall these butterflies can make massive southward migrations.

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