This undated photo provided by the US Fish and Wildlife Service shows the island marble butterfly. Federal wildlife officials want to protect the rare white and green butterfly found only on Washington's San Juan Island. The U.S. Fish and Wildlife Service says the island marble butterfly has been declining since it was rediscovered on the island in 1998. The agency is proposing to list the butterfly as endangered and to designate about 813 acres of mostly public land on San Juan Island as critical habitat for them. (Karen Reagan/US Fish and Wildlife Service via AP
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