i have 5 hens that are 12 weeks old. i just brought home two more that i think are probably closer to 8 weeks. they are NOT getting along. they did manage to all finally get into the coop for bed, though. right now it's the original 5 ganging up against the new 2. they free range during the day so the two groups stay pretty clear of each other. will they eventually start to get along? how long will it take before a truce is made?