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University of Chicago Press Journals

South Hills Crossbill Attacking Pine Cone

Caption: A male South Hills crossbill using its crossed mandibles to bite between lodgepole pine cone scales to access seeds. The decurved mandibles enable crossbills to exert strong biting forces at the tip of their bill.

Credit: photograph by Craig Benkman

Usage Restrictions: credit must be given to Craig Benkman

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