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PA Big Day Details |
| Date | May 16, 1980 | ||||||
| Number | 141 | ||||||
| # Seen by All | 138 | ||||||
| Area | State | ||||||
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| Tinicum area, Tinicum N.W.R., Philadelphia Airport, Swarthmore woods, Tyler Arboretum, Ridley Creek S.P., Doe Run, Prospect Park. No unusual species noted. | |||||||