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Monarch Butterfly

Monarch Butterfly Monarch Butterfly Danaus plezippus
To survive, this unique migratory insect must overwinter successfully at a few sites in California and Mexico, where colonies may contain as many as 100,000 individual. Deforestation and tourism threaten the roosts.

Photo: Allen Montgomery, U.S. Fish and Wildlife Service, California, U.S.A.
Source: Optilearn CD-ROM, copyright 1995.

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