Below are a few links below regarding Iowas wild pheasant population and how weather patterns effects bird numbers. As we know, good bird numbers come about through habitat and decent weather.

http://www.iowadnr.gov/Portals/idnr/...whatweknow.pdf

http://www.iowadnr.gov/Portals/idnr/...ant_trends.pdf

http://www.iowadnr.gov/Portals/idnr/...sants_2011.pdf