John M. Cooper
LGL Environmental Research Associates Ltd., 9768 Second Street, Sidney, B.C. V8L 3Y8
Abstract: A flock of approximately 500 Gray-crowned Rosy-Finches (Leucosticte tephrocotis) was observed mobbing a flying Common Raven (Corvus corax) on 22 September 1992 in the Cayoosh Range southeast of Lillooet, B.C. The implications of this behaviour are discussed.
Key words: Common Raven, Corvus corax, Gray-crowned Rosy-Finch, Leucosticte tephrocotis, British Columbia, behaviour
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