Species: Black-headed Gull (Chroicocephalus ridibundus)
Number of Individuals observed: 1
Date of Sighting: 12/26/2016
County : Philadelphia
Location : John Heinz NWR
GPS Coordinates: 39.890209, -75.261185
Observer(s): Michael Walter, Pamela Barton
Date of Submission: 12/27/2016
Submitted by: Michael Walter
Written Description: Yes Photo: Yes Specimen: no Recording: no
