We have 16 6-month old chickens that are free ranging. We also have 10 10-week old chickens that we are teaching how to free range and introduce to the older chickens. We have a three room coop, so we have them in the same coop in different rooms. This week, I started letting the 10 weekers outside in a fenced in area beside the coop. The older chickens flew over the fence to investigate, but everyone got along great. We stayed outside with them the first few days doing yard work to supervise. Now the 10 weekers go out to the fence in the morning and stay out all day. Everything is going great until bed time. We are trying to wrangle the 10 weekers back in to the coop about 6 or 7 and put them in their separate room so the older chickens can have the fence open to go to bed. If we don't open the gate, 3-4 of the older chickens will stay outside to sleep. Would it be safe to open the fence and let the younger ones free range with the older ones part of the day or all day? Will the older ones teach the younger ones to go to bed on time? When can we let them sleep in the same room? The chickens have to go through the fenced in area to get to their room. The front of the coop is storage and has baby chicks still on heat lamps, so I don't want the older chickens walking in that way.