My mom and dad are trying to get more chickens. They bought a rooster and he seemed to be getting along fine with the 5 chickens they have. We decided to separate him with 1 chicken so we would know which ones were the babies but, she has stopped laying and so have the other chickens since we took the rooster out. Any thoughts? Also some layed a very small egg after we got him. The chickens are over 1 year old. Any help would be great.