John Heinz National Wildlife Refuge / Lagoon Loop Professional Review and Guide
"Tinicum Marsh is the largest remaining freshwater tidal wetland in Pennsylvania. This unique ecosystem is located, surprisingly, just miles from downtown Philadelphia. Situated along the Atlantic Flyway, Tinicum is home to over 80 bird species. Nesting boxes have been placed throughout the refuge to attract migratory birds. Over 280 types of migratory birds have been recorded visiting the refuge. Ducks, Canadian geese, great blue herons, and various other migratory birds use Tinicum as a resting/feeding spot during their flights north and south. The refuge is also home to deer, turtles, frogs, and many other small wildlife.
There are over 50 species of wildflowers, as well as trees such as willows, locusts, maples, oak, and alders. Native plants such as cattails, rushes, and sedges are also visible and provide excellent food and cover for wildlife. Purple loosestrife and other non-native plants also thrive here. steps are being taken, however, to limit the spread of these invasive plants. nice dismissed as a useless swamp, Tinicum Marsh has been recognized as a vital link in the health of the surrounding area. Terrain: Tight singletrack trails, wide doubletrack trails, and gravel roads that travel through densely wooded areas and tidal marshes."