In February and March, 2007, Dr. Weiss and his assistants collected hundreds of caterpillars from Coyote Ridge in Santa Clara County, where they still can be found in large numbers. This was done with special permission from the U.S. Fish and Wildlife Service, which protects this federally threatened animal.
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Then, with great care, the scientists transported the caterpillars to Edgewood and placed them in the mowed areas, where the California plantain had already begun to emerge.
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After pupating, the caterpillars began emerging as adult butterflies.
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