I just started raising my own chickens this year and so far so good with a somewhat minnor issue. I started with a flock of 20 new hatchlings in feburary making them about nine months. In july I decided to introduce a nother 20 new hatchlings to increase my gene pool making them around three months. The two groups were introduced in a broader inside the coop when the younger chicks were four weeks. The problem I am seeing is after two months of living together it is as if I have two completely independent flocks. The nine month olds want nothing to do with the younger ones. Is this a problem as my younger flock has no roos for protection and will the two flocks ever become one? Thanks for any information.