If we plan to build our coop to house 8-10 layers, aside from the coop itself, do w need to have the fenced in run around the coop ? They will free range most of the daylight hours and can use the coop to sleep in correct ? Being we have 12 acres for them to be on, need we have the small enclosure around the coop area ? Most of the pics I see on the coop page have them. Just wondering.