There's an article in the latest issue of Backyard Poultry about keeping the peace with roosters in the flock, that I thought was really helpful. Here are some of the high points:
1. Mind your rooster-to-hen ratio. Too low a hen-to-cock ratio can cause fighting between cocks. The idea average ratio for lightweight laying breeds is 12 hens per cock
2. Roosters need their space. Make sure the lower-order cock has places to get away from the top man. "Multiple roosters in one flock are more likely to get along when they are not so crowded that they are always in each other's faces," the article says.
3. Add feeder and waterer stations, so each cock can take "his" group of hens to separate feeders and waterers. Position stations so each rooster can reach a station without having to pass through the other rooster's "territory."
Also, it is natural for roosters to fight to sort out pecking order issues. If they continue to fight, or begin to severely injure each other, you may want to put one or both of them down, and start over with another cockerels. Some roosters just get along with each other better than others. Also, it's always better to have three roosters instead of two. That third cock can help be a sort of "mediator" to the two that are sparring. Hope this helps, and that your roos settle down! :)
Edited by beetandsteet - 12/10/15 at 11:38am