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Project Noah Nature School
Nymphalis californica
Its wingspan varies from 3.2 to 7 cm (1 1⁄4–2 3⁄4 inches). The California tortoiseshell is known for having population explosions which cause the butterflies to migrate to new areas.
Spotted in Cascade foothills. 2000 ft.
Spotted on Sep 25, 2019
Submitted on Sep 27, 2019
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