Oregon silverspot butterfly was listed as a threatened species with critical habitat in October 1980.
U.S. Fish and Wildlife Service

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Threatened Silverspot Butterflies Return Home To A Coastal Oregon Mountain

By Erin Ross (OPB)
Saddle Mountain, Ore. July 17, 2018 6:45 p.m.

Silverspot butterflies were extinct on Saddle Mountain. Now they're back, but will they thrive?

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