Short answwer .... NO
Will they live for 24 hours, most of them.
Will they live for a week, a few of them.
Will they live through the Winter ........... refer to the short answer.
I dont think predators will have to be trained to hunt them. A couple years ago, we put some pen raised quail out to hunt them with our pointing dogs. These are great flying birds - a lot of them fly out of sight. Took us about 30 minutes to put them out and were going back to get the dogs and rode sxs by where we put one of the first birds. A hawk got up out of the grass. We got out and looked and it had caught a quail and was eating it. Hasnt been a a native bird in that field in 30 years
No matter what the guy you are buying from says they aren't going to survive in a high enough percentage to create a wild population. Pen raised birds are fed from a feeder from the time they are hatched, there are no predators inside a pheasant pen (unless something just dug in and then watch the slaughter begin). Pen raised birds don't know how to forage for food and avoid predators.