The chickens now have a fenced in area that is 900 SF! It is not predator proof, but it was not intended to be. There is a smaller run attached to the coop that is totally predator proof. Previous to the new run, the birds would free range during the day. However, we have seen various unknown dogs run through our yard, and DH has become a bit frustrated with the amount of poo on the deck and the driveway. So, we fenced in a nice big area for them. All it really needs to do is keep dogs out and keep the chickens out of trouble and the garden. When they are not supervised, they will be locked in the secure coop/run. It's just posts and chicken wire, but I'm happy.