This is our second year with chickens and our 4 new girls are almost 12 weeks old. We will need to put them in with our two big girls soon. They seem to be ok when they are running around for playtime. (We can't free range) But if the one of the little girls gets too close, they get nailed. I know there must be a thread on here with the best way to combine the new with the old. We are building a bigger coop/run too so maybe if we wait and put them together in a strange new place it will be better. Any thoughts or tips would be great!