This all, to me, is what makes late-season SD public land birds so fun (while also frustrating). It goes back to what I've said on here several times before. We've got tons of great public land. But we're not like some other states. The pheasants usually don't need it, particularly during the day. You stand in the middle of "the perfect public spot", whether it be slough, trees, food plot, or whatever. You see fresh tracks all over, but not a bird in sight. Sometimes they've given you the slip. But more often than not, just look around. In South Dakota, in most cases, you'll see PRIVATE sloughs, trees, corn, etc. Everything a pheasant needs to get him through the day, usually within 1/2 mile or even closer. That's where they are. Then they wait until the last minute to return to public roosting cover, just to make us mad.
Just Sunday I figured I'd check a spot I hadn't hunted in a few years. Has a cattail/grassy draw way, way back, with a few nice, big thickets, some phragmites. All surrounded by private land that has the same stuff, plus picked corn this year. They'd littered the place with tracks that morning. Everywhere we went, fresh tracks, but no pheasants. I was starting to think they were probably all in the huge shelterbelt about 1/4 mile away. But we finally caught up to them on about the 3rd thicket, right on the fenceline. Maybe 50 birds, most of which flushed way wild, a couple of which screwed up. My buddy missed a couple. I got 1. When we shot, quite a few others took off in the private slough. Not the most productive walk I've ever taken, but it really felt good to find them. Of course, it helped that it was 35 degrees & not zero. Made the work we'd already done & that which we knew was to come much more tolerable.
This year is a bit odd in my areas. The drought prevented most of the grass from ever getting thick. So even with so little snow, there's way less grass cover than they'd usually have. Sure, it cuts down their options, but I think it's pushing them more than usual into thickets/trees. If there's anything "my" public areas lack in the winter, it's thickets & trees, particularly by the fence near food.