References

Atlas of Breeding Birds in Pennsylvania
Dan Brauning

University of Pittsburgh Press
1992
************************************************************

Marsh Meadow Mountain. Natural Places of the Delaware Valley
J J Harding

Temple University Press
1986
************************************************************

The Birds of Pennsylvania
G McWilliams and D Brauning

Cornell University Press
2000
************************************************************

Annotated List of the Birds of Pennsylvania
Santner and Brauning and Schwalbe and Schwalbe

Pennsylvania Biological Survey
1992
************************************************************

Necopeck State Park
Alan Gregory
Pennsylvania Birds 6:96
PSO
1992
************************************************************

Annotated List of the Birds of Pennsylvania - Second Edition
Franklin Haas and Barbara Haas

Pennsylvania Biological Survey
2005
************************************************************

Second Atlas of Breeding Birds in Pennsylvaniua
Andrew Wilson, Daniel Brauning, and Robert Mulvihill

The Pennsylvania State University Press
2012
************************************************************