I don't think feral turkeys are a problem for anyone. Like OG said, they do not survive in the wild like domestic pigs or dogs do. I don't think they stand much chance of breeding, but I am not sure. The ducks seem to have some success in the breading area but I think they have to stay local and not migrate so that is limiting in itself. You may want to check with the DNR on taking them in the off season.