Brother lives in Pierre so have been out several times pheasant & bow hunting. Waterfowl of all kinds will have the MO River covered up. Lots of Corp of Eng land along river that people hunt. Birds have learned to climb real high before leaving river as they are going to get blasted at when they fly over the bank. They'll stay high until they reach feed area which is usually outfitter leased, then drop like a rock. Nephew & his buddies use to do pretty good getting in the roadside ditches on top of hills a few miles west of river and shoot them as they came over road (legal). BTW, they have weird laws where road hunting is legal even if private property on both sides, so brush up on regs. Don't ignore school action land for pheasants either. Weather can be hot, blizzard, or anything in between at that time of year. Good luck & enjoy!