References

Atlas of Breeding Birds in Pennsylvania
Dan Brauning

University of Pittsburgh Press
1992
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Marsh Meadow Mountain. Natural Places of the Delaware Valley
J J Harding

Temple University Press
1986
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Birds of Bucks County
Ken Kitson

Bucks County Audubon Society
1998
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Birding the Delaware Valley Region
J J Harding

Temple University Press
1980
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The Birds of Pennsylvania
G McWilliams and D Brauning

Cornell University Press
2000
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Birds of the Lehigh Valley and Vicinity
Saenger and Malt and Crilley

Lehigh Valley Audubon Society
2002
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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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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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