Seeing as how they could technically be referred to as hatch mates and there are no older roosters to keep them in line. I would suspect in the coming weeks while they are still young to see some fights between them. Nothing serious or bloody just establishing themselves in the pecking order. Your girls will probably even join in on the fun. By the time they are teenagers and hormones hit, they will have clearly established between themselves who is #1 and who is #2. When those hormones do hit, they both most likely will loose their pea picking minds for a bit, and there may be a few scuffles. Remember, they are hormonal idiots, and will do idiot things. As long as my boys do not become aggressive to people I leave them alone to work it out. If you can make it to a year with both of them you will have a dominate boy who has his pick of the hens and will do the majority of escort duties. The other boy will be his back-up. His job will be another set of eye's for predators, escorting hens when the other guy is busy and helping keep those girls in line. It is actually wonderful to see 2 boys working together if you have enough hens. I think it overall makes for a happier and stable flock.