References
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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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Rose Valley Lake
Wes Egli
Pennsylvania Birds 4:94
PSO
1990
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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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