Herd reduction is going on all over the midwest.

IL deer harvest is down
http://chicago.suntimes.com/sports/firearm-deer-harvest-down-illinois-deer-hunting/

OH deer harvest is down 9% over last year
http://www.chroniclet.com/outdoors/2016/12/09/ODNR-to-blame-for-low-deer-harvest.html

IA deer harvest has dropped from 180K in 2005 to 105K 2015-16
http://www.iowadnr.gov/Hunting/Population-Harvest-Trends