I have a question about introducing new chickens into my existing flock. I have 5 new pullets that have been in quarantine for a month. They are 15 weeks old so feel that they are big enough to fend for themselves once they are together with the older girls. My question is I have penned up a section in the older chickens run and will put them in there so that they will get use to each other. The run is covered. Do I need to bring the pullets back into the garage where they have been kept every evening or can they stay the night out in the covered run. There isn't a coop for them to get into.