Will this work for my flock

I have nine chickens total and I have 2 roosters in the flock but I had a year old RR rooster and I got 2 chicks turned out one of them was a barred rock rooster anyway he's crowing now and he's been getting aggressive with the hens like he's trying to kill them since he can't have them my rr rooster protects them from him but I don't really want to get rid of him unless I have to but all them free range and go in one of my barns and I have a coop to lock them up but i just let them free range and sleep where they want to but I wanted to see if I took the barred rock rooster out and kept him in the pen and go buy some other new hens and put them in there with him so they make a flock and he gots his hens and the other rooster gots his hens and let them free range out side I got a lot of space for all them to venture in my yard and not run into eachother but basically im asking if I can have more than one flock free range in my yard without them killing each other