I have a 3'W x 3'D x 4'H coop that currently houses my 31 week Spangled Russian Orloff and Barnevelder in a 10' by 12' pen. I am getting a 6 wk old Silver Penciled Plymouth Rock in a few days and I am not sure if I should keep her inside or put her out with the other two. I haven't seen a pecking order between the two. They are both very friendly. The Orloff is occasionally broody and is laying one egg each day. And the Barnevelder is my talker and lays 1 egg every 3 - 4 days.