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Molting Bison

This bison is losing the last bits of his winter coat getting ready for the summer months. Perched on top of him are several birds. The birds and the bison have a symbiotic relationship. They eat insects off the bison such as ticks and mosquitos providing food for the birds and getting rid of the pests for the bison. The birds also pick off the molting fur for use in making their nests.

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Taken on June 24, 2010