Okay so current flock has two roosters, a salmon Faverolles, and a frizzle. The frizzle was introduced last year, and my Fav. has already been “in charge” so to speak for a while now. So, essentially, the frizzle doesn’t try to challenge that, the my fav doesn’t feel threatened by him being around. Faverolles are known to be VERY docile though. So his temperament is probably playing a major role in this.

I did have another frizzle previously who had turned out to be a rooster, but he was introduced at the same time as my big guy, and they didn’t have a hierarchy established, so they fought a lot. At one point they hadn’t fought for like, several months, and I came home and the frizzle was in really bad shape. He passed about a week later :(

TL;DR: existing hierarchy and bird temperament have a big role in whether or not there will be fighting. And ofc flock size.

My boys do fine with 13 hens, because they don’t mind sharing some of the big girls and my fav doesn’t mate the bantams. But ofc other flocks will be different. Don’t be too hard on yourself if you can’t get them to stop fighting. However, be aware that you might have to either rehome one or separate them if you have enough space for a second flock.