I have six pet chickens that are about a year old. I bought them last year as chicks. I ended up with three roosters and three hens. They have always been housed together without any problems. Recently I noticed that two of the hens are losing feathers on their backs. After researching online, I learned that they are probably over mating. I did not even know that this was a possibility. I am in the process of building another coop for the roosters and I got saddles for the hens. If I house them separately, are they able to interact together in the yard or do they have to be separated at all times?