Do you find that the subordinate rooster eventually reaches his full potential, or does he tend to be permanently stunted? My subordinate rooster is both growing bone and filling out muscle very slowly compared to my dominant rooster. At 7 months old, the larger one is almost 7 pounds, and the smaller one is about 1 1/2 pounds lighter, and not filled out at all. They free range with 14 hens and 5 other roosters (the other roosters are a different breed, smaller, and don't interact much with the two Dorking roosters). The smaller Dorking rooster has plenty of food available, but spends most of his time trying to breed with the hens, which the dominant rooster forbids. There's no real fighting, since the smaller rooster backs away. I like the conformation of the smaller one, and would love to use him in the future if he will eventually develop appropriate size. I would prefer not to separate them right now, but would consider it if it's necessary for him to reach his full potential. On the other hand, if he will eventually reach full size without separation, that would be much easier at this time, since I'm not in a hurry for him to grow but don't have the extra pens right now.