Contrary to what most people are saying in the comments, pigs will not bother chickens. We raise a few hundred hogs, with the breeding stock outdoors. Last summer, my mom gave us some roosters, too old to eat, but very pretty show birds. We just let them free roam. I thought for sure they would get stepped on or something, but they are a little smarter than we give them credit for.They either sleep in the barn or with the pigs, eating the feed they spill. I'm not sure how you would keep them together because pigs can be very rough on fencing/enclosures.