We do have 1 flock of chickens, but they're divided. We have 5 leghorns that we had first then we got 3 chicks. We gave 1 away because it was a boy. They're all the same size and little to no conflict. When will they stick together though? The younger ones stay clear. Will they be "one" when the younger ones mature(one is a 18 week EE and a 19 week cochin)?