I have two black australorp pullets that are 11 weeks old in my main coop. Two weeks ago I purchased 3 easter egger pullets that are 15 weeks old and I put them in a temporary coop (dog crate in a chicken wire run) to give the two flocks time to adjust to each other before putting them together. Friday night I plan on putting the 3 big girls (EEs) in the coop after bedtime. I will stick them on the roost. I am doing this on a Friday since I have off Saturday and Sunday and can monitor. The big girls are quite a bit larger than the little girls even though they are a month apart in age. They have been living in separate quarters for two weeks, but they can see each other through the wire. I have read so many things here about chickens attacking each other when you try to integrate, but mostly it is putting smaller chicks in with adults. Will it be easier putting the bigger chickens in with the littler ones? The little ones "own" the coop right now so I am hoping that will make the big ones more submissive since it will be a new coop for them.