Our chickens have a warm house with a moderately sized yard. We had been letting them out to free range the garden but it requires us to supervise them the entire time. We decided in Dec to expand the chicken yard to about .10 of acre. The gates are up; fencing next week. They'll be protected from ground predators but not aerial ones. It's a nice little extra space for when we are there but do not have to supervise them constantly. Here's two of our gates. The big one is for the tractor.