TY  - RPRT
TI  - The 2003-2008 summary of the North American Breeding Bird Survey
AU  - David J. Ziolkowski
AU  - Keith L. Pardieck
AU  - John R. Sauer
PY  - 2010
UR  - https://pubs.usgs.gov/publication/70004023
ID  - 70004023
ER  -