

Relative density of wild pheasants in North America.
Source: Sauer, J. R., J. E. Hines, J. E. Fallon, K. L. Pardieck, D. J. Ziolkowski, Jr., and W. A. Link. 2014. The North American Breeding Bird Survey, Results and Analysis 1966-2013. Version 01.30.2015, USGS Pawtuxent Wildlife Research Center, Laurel, MD.
