There are a few preserves in the US where the cover/environment is managed to maximize its carrying capacity of birds and also stocked with supplemental young birds early to let them get to a fair aproximation of wildness. These work especially well when they are near farms that provide a lot of food but aren't decent shelter or nesting areas. Then the "preserve" can carry even more birds and tends to suck any truly wild or stocked carryover birds out of the surrounding areas for shelter, mating, and nesting. The locals don't like these places because they tend to "have all the birds" and also tend to be monopolized by outsiders who come to shoot for a fee. Some farmers want to have it both ways--"clean farm" to maximize crop yields and still have lots of birds. Doesn't happen.

I hope the trend is toward seeing birds as a "crop" worthy of some acreage of their own. I don't mind AT ALL paying to hunt as long as the experience is "hunting," not "shooting." I've never hunted on a purely stocked preserve and don't intend to. I too would rather chase chukars around the desert ridges.....