I have 9 hens and two roosters (they are all 16 weeks old). Is it a bad idea to keep two roosters with only 9 hens? (I started out with 12 roosters. I just sold ten. I was going to sell all twelve but my son wanted to keep two of the roosters as he became attached to them.) I am now regretting that. I am worried they are going to fight. Suggestions?
I have a flock of 12 that has been raised together, two of which are cockerels. Only one was supposed to be male, but we all know how that goes.
Anyway, they are now just about 16 weeks old. So far, my two guys are doing fine together. There has been some minor posturing, but the two cockerels roost together and this morning they sang the song of their people as a duet.

They actually seem to share guard duty, which is something I never expected (taking turns resting vs keeping watch). There has been no violence at all ... yet. I do realize this could change at any moment, but thus far things have been good.
Each boy already seems to have his favorites among the girls and only one has caught the eye of both of them. One cockerel is already trying to mate, but most of the pullets aren't ready or willing yet and just run away from him. The other isn't even showing interest at all ... again, yet.
I guess the point of all this is that I am in a similar situation and have opted for a wait-and-see approach for now. I don't feel the need to make any changes until there is actually a problem. That said, I did build a split run, just in case at any point I found it necessary to separate the chickens for any reason. Should things suddenly get nasty, I have a way to keep the boys apart until a more permanent resolution can be decided upon.
I would suggest a similar plan for you. Figure out a way to build a second, smaller shelter or section off part of the run or whatever will work in your specific circumstances BEFORE you need to do it. Then hope you never actually have to. Good luck!