It does not work. You are better off managing for live wild bird expansion by introducing cover, forage and selective harvesting, males only. Nesting areas help a lot.
With pheasants and quail they are basically cannon fodder. Released to be shot that day or the next. The gamekeepers won't release them 3 days or more before the hunts because predators finish them off first. Ignorant birds make one mistake and they are some predators dinner. Especially birds of prey. Coyotes, raccoons and dogs finish the rest. The pen raised birds make all of the mistakes, they don't know any better. Fly straight up, fly when they should run, run when they should fly. Don't use cover. They never had to in a pen, they just don't figure it out when they are released. Don't waste your time.
