I have 9, 4 week old babies. I have a large coop and run with 4, 1 year old pullets. Directly next to it I have a smaller coop and run. I am planning to let the babies in the smaller run during the days and bring them in at night for the next week or so, as it's still in the 50's at night and they are not fully feathered. (they were out for a few hours today). By the end of the week I'd like to have the babies sleeping outside (in their own coop). How long before I can put the babies in the big coop with the big girls? The big ones ran up to the side of their run today to see all the commotion when I brought out the chicks, but lost interest pretty quickly. the little coop is just that, very little and I don't know how long 9 of them will fit in there!