On Sat. I put three, 3 week old chicks in with some that are about 7 weeks. They are doing ok, not getting picked on too much but the 3 little ones stay together and the older ones do their thing. Is there any instinct at all yet with these older girls to watch over the younger ones yet? I let them free range but also have a small run outside their coop. It took until last evening before the 3 little ones even came back out of the coop into the small yard. Now tonight they did come out of the little yard but stayed pretty close to it. Will the older girls watch out for them at all yet? Also are chickens pretty social with each other and do a lot together in groups? When they go out free ranging I see several little groups doing stuff together. My husband thinks when they get older they are more loner type animals. From what I see now I don't think so.