How do they come up with those dates?
Fetus collection and aging then back dating to determine the date the doe was actually bred (based on development chart, length and weight). Pretty dang accurate way to do it. Map looks real close to me in the areas I hunt based on my experience in Wilcox, Clarke, Marengo, and Dallas. The green may be shaded over just a little bit to far to the west in Marengo but it's pretty close.
