Fort Washington State Park.
Located just northwest of Philadelphia, high concentrations of oaks provide food for spring and fall migrants as well as resident species. Springtime is a particularly good time to observe warblers, especially during the first two weeks in May. At this time of the year, a high count of four thousand individual warblers of twenty-six species has been found in the park. Over 200 species of birds have been recorded here.
Hawk Mountain Sanctuary.
Located along the Appalachian Flyway in east-central Pennsylvania, this scenic sanctuary offers birders an outstanding, year-round nature experience with its mountaintop vistas, 8 miles of hiking trails, and the thrilling migration of nearly 20,000 hawks, eagles and falcons each autumn. Hawk Mountain is located north of Hamburg, Pennsylvania, approximately 7 miles northeast of I-78 and is approximately 1½ hours from Philadelphia.
Presque Isle State Park.
This curving sand spit jutting into Lake Erie just to the west of the town of Erie, is a fabulous migrant trap. With a 13 mile loop road running through it, all parts are easily accessible. Spring migration is the best time to be there, and in a good day, one can expect to see up to 20 species of warblers.
The Erie National Wildlife Refuge.
10 miles east of Meadville on Highway 198 in north western Pennsylvania, this refuge has been designated an Important Bird Area by the National Audubon Society because of the diversity of habitat it provides to the approximate 250 species of birds attracted to the refuge. Henslow's Sparrow breeds here.
The John Heinz National Wildlife Refuge at Tinicum.
In southwest Philadelphia, this popular birding hotspot is the largest remaining freshwater tidal wetland in Pennsylvania. It is very conveniently located to the city, and about 1 mile from the Philadelphia International Airport. More than 280 species of birds have been recorded here and birding can be good year round. The main entrance to the Refuge is at 86th Street and Lindbergh Boulevard.