I personally think you're a bit off base concerning pen raised vs. wild birds. Trust me, your dog will figure it out. Yes, some pen raised birds are lumps that let you pick them up. But, the dog doesn't care about that. My PP has belly crawled into a huge blackberry bramble to find a wounded pen raised rooster and she's disappeared into the cattails looking for wild birds, the only way I know she's on point is the bushes stop moving. I've hunted a lot of pen raised birds in Washington, the state has a pheasant release program there. They (WDFW) does a good job of keeping new, wild stock in the breeding program so those birds act wild and can actually survive on their own. I've seen released birds out and about months after the season closed. My point is, the dog will go find wild birds even if trained on pen raised. If the dog has drive, it will figure it out. You're overthinking the issue, concentrate on getting a birdy, healthy, biddable dog with an off switch.