@ 4 weeks I let them in the coop and they have been fine there all day. Now they are being let out into the run on the side of the house. 35 feet by 8 feet wide. Completely fenced (10') high all the way and all the ways to get out have been filled with rock or a way to prevent them from getting out. Day time only at 6 weeks in the run or wait until they get older. If older at what age will it be good for an all day out in the run out of the coop? I will be home and if not they go back in the wired coop 6' X 10' while im gone.