I think most states where there is a pheasant season release a bunch.
Until last year, Montana hadn't released any pen-raised pheasants on public land for about 40 years. And still is considered to have some of the best wild pheasant hunting in the nation.
They restarted growing and planting pheasants because of insider politics where the Deer Lodge state prison needed a new budget line item, so the state spent a million dollars of funds otherwise intended for habitat enhancement and wildlife habitat to build a hatchery and use prison labor to raise the birds. Bad deal.
