Philadelphia school students take part in an educational birdwalk on Tinicum marsh at John Heinz National Wildlife Refuge, PA. Subjects: Birds; Environmental education; Youth; Wildlife refuges. Location: Pennsylvania. Fish and Wildlife Service Site: JOHN HEINZ NATIONAL WILDLIFE REFUGE AT TINICUM. . 1998 - 2011.

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Size: 2744px × 1822px
Photo credit: © piemags/FWL / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: birds, education, environmental, refuges, wildlife, youth