A child decorates a pair of butterfly wings to wear at John Heinz National Wildlife Refuge at Tinicum in Philadelphia, Pennsylvania. Photo by Wingyi Kung/USFWS
You are exiting the U.S. Fish and Wildlife Service website
You are being directed to
We do not guarantee that the websites we link to comply with Section 508 (Accessibility Requirements) of the Rehabilitation Act. Links also do not constitute endorsement, recommendation, or favoring by the U.S. Fish and Wildlife Service.