I have hunted both and to me there is a huge difference. Wild birds are just smarter. They flush wild. They run sooner and flush out of range. They fly/run back more often. It is not very often (unless there are alot of wild birds) that they make dumb mistakes. If you hunt an area where there are a lot of wild birds, I mean a ton, they seem to kinda get dumb also. But usually that only happens in the prime areas of the dakotas, Neb, Kan, etc. And many times, even those numbers have been enhanced with pen raised birds. If you are lucky enough to harvest a truly wild 1.5 year old bird, you have a trophy. Especially if it is not harvested in prime roo country. I hunt Minnesota, SD, and ND and with all due respect to the dakotas, Minnesota birds are smarter on average, IMHO.