.... I had two roosters with 14 hens at one point. There was the dominant roo and the lesser Roo. Both were Brahma, but the dominant one has always been around since the beginning. The other one was introduced to him and his flock at 2 months old. He learned to respect the dominant Roo. Sometimes the older one would chase the younger but never anything too serious. A minor comb wound once, but he always kept his distance and never sought to challenge him. Would love to try to get away with mating the hens when he wasn't around... I should note that the run is very large and i often free ranged them. Recently sold him. Good luck