I have 5 chickens that are 7 weeks old. 2 RR, 1 BB plymouth rock and one black sex link. I think the BB might be a roo. it's more dominant than the others and after looking on another post, I think one of the RR's is also a roo. I also have 6 more one week old chicks. 3 polish crested and 3 from the assorted rare breed bin at orschlin's. I think they are easter eggers because they have little muffs on there cheeks. so how long should I wait before introducing the youngsters to the other flock? How do I do that? The coop is out in an old horse dry lot that is completely fenced off. the older birds free range it and coop up at night. they have the run of the place and the horses and dogs keep predators at bay. My biggest concern is this: will the bigger birds beat up on the smaller ones? I'm in Kentucky and in about 3 weeks the weather will be perfect for the chickens. already it's getting very nice during the day and I don't want this brood box on my dining room table anymore, the fiancee might be getting tired of seeing/smelling it. help!