We hatched eggs one year & ended up with 5 roosters & 2 hens! Because each was a loved, named pet by the time they began to show their sex, the kids (human) would have been heartbroken to have to get rid of any. I called around to a few vets asking about neutering the roosters--could almost hear them putting their hands over the phone while laughing at me...
Well, danged if we didn't have essentially no problems! My theory was that 5 roos are so busy sorting things out, there's no time for directed mischief at just one or two...Neither of the hens ever had a bare back, either; and, as there was lots of silkie blood in the mix, they even hatched out a few broods over the years--All while living in the same, snug coop. (Which was not big enough to keep the offspring for long, alas--but we always had plenty of takers for the chicks.)
These were mixed banties...we observed lots of posturing, chasing, and squawking, but almost never any blood (by which I mean, I can only think of 2 cases in over a decade), and never had a case of a wound being picked on...The pecking order seemed to continually change. I'm not sure even the roos themselves always knew how it went. It was definitely one of the most colorful and lively flocks ever.
I'd expect a big part of the success was having plenty of room and a nice fenced yard for them; though they spent many days straight cooped up during some winter spells. This year the last rooster died just before his 11th birthday. One hen, now 11+, remains.
So--miracles can happen.