I've seen lots of posts about not moving chicks outside until the are fully feathered. Mine are 5-6 wks old and one is fully feathered and we're waiting on the other three. However, I know they all have to get used to eachother and the chicks are going outside during the day in a wire dog crate so they get used to outside and the big girls can come get a good look at them without hurting them. When is it ok to put them in the coop with the big girls? I am planning to do a 'panic room' inside the coop where the lil ones can go but the big ones can't, but other than that they would not be seperated... How big/ old should they be?