We recieved our first batch of cornish cross Mar 3. We have kept them in the brooder then transferred them to the small chicken coop which has a window. They have not been getting any bigger than about 3 to 4 lbs. We'd like them a little bigger for butchering. So I let them out into the small chicken yard. They have been huddling at the door wondering what to do. I can't even imagine what they are thinking. Will give you an update to how they adjust.