So I purchased my first chickens a few months ago. I didn't dip my toe in I wholeheartedly dived in lol. My oldest chickens right now are 10 week old easter egger,2, 6 week old sex links and 3 polish bantams. They all are in the run together and at night the bantams go into a separate smaller coop. I just bought 5 new adult chickens. 2 Ameracaunas,2 cuckoo marans and 1 unknown lol. How do I introduce older chickens into a pen with younger chickens?