The southern limits need to be reduced. If you shoot 300 a day in South America, 100 in Texas, those migrating north/south have a reduction population problem. The pop of Doves has increased quite a bit over my 70 years of hunting, but the Grackle and Starling population is a limiting factor for doves. I never saw a Dove in the city until the 80's. I have yet to see more than one at a time in the woods. Migrating populations and flocks of feed spots are where you get the massive numbers, I have NEVER seen those in NE.