The chickens love sitting under the coop. There is 12 inches of clearance currently. IF I add some peat moss, wood ash, dry earth, is that enough clearance for them to bathe? It is so wet here, and we have alot of clay. I need to find a way to give them some dry dirt to bathe, and under the coop stays dry. Would that work, or do they need more head clearance? Thanks!