References
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Birding at the Hershey Medical Center
Steve Rannels and Wade Edris
Pennsylvania Birds 2:90
PSO
1988
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Birding at the Hershey Medical Center
Steve Rannels and Wade Edris
Pennsylvania Birds 2:90
PSO
1988
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Atlas of Breeding Birds in Pennsylvania
Dan Brauning
University of Pittsburgh Press
1992
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The Birds of Pennsylvania
G McWilliams and D Brauning
Cornell University Press
2000
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Annotated List of the Birds of Pennsylvania
Santner and Brauning and Schwalbe and Schwalbe
Pennsylvania Biological Survey
1992
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Birding at the Hershey Medical Center
Steve Rannels and Wade Edris
Pennsylvania Birds 2:90
PSO
1988
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Stony Creek Valley — Dauphin and Lebanon Counties
Steve Santner
Pennsylvania Birds 1:117
PSO
1987
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Annotated List of the Birds of Pennsylvania - Second Edition
Franklin Haas and Barbara Haas
Pennsylvania Biological Survey
2005
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Second Atlas of Breeding Birds in Pennsylvaniua
Andrew Wilson, Daniel Brauning, and Robert Mulvihill
The Pennsylvania State University Press
2012
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