Pennsylvania Atlas of Breeding Birds​

Thank you for visiting!   This site provides access to results of Pennsylvania's first (1980s) and second (2000s) breeding bird atlases, as well as background and methods.

Published in 2012, the "Second Atlas of Breeding Birds in Pennsylvania" successfully completed an update of this statewide assessment of breeding birds.  Fieldwork was conducted from 2004 through 2009, documenting nesting by 190 species.