I have 7, 3 Year old girls and we bought 3 more chicks in February. He raised them in a run in my garage during cold spring and now they are 4 months old. We let them out into the back yard during day with the other 7…. The other 7 chase and peck these new girls anytime they get close…. They even seem to “stalk” the new chickens. I have built a new coop ( bigger) and want to put them all in the new coop and run…. Do I just let them fight it out? Having the 3 new girls makes me afraid of confining them where they can’t get away….. what should I do? Introduce one chicken at a time to the new girls in the new house and run?