I think every situation gets different results. I only had trios. The hens only rarely had feather loss and fighting was minimal. But i had geese and a peacock then who could have been affecting the dynamics.
I only know my experience, my cochins sometimes sparred a bit then moved away from each other. Everyone had their territory in the yard. But those were fully free ranging birds. I don't think you can bank on it.
A good rooster shouldn't chase anyone. I've had probably 20, only one jerk ever. Mostly I've had cochins though, they are peaceful and gentle, even had one that helped sit on eggs. Others will know good breeds.
Many people recommend not handling roos and making pets of them. The one I had...
Welcome, so sorry about your beautiful hens. I have some young buff Brahmas and they really are sweet birds.
Mink just suck. They are here in a little creek sometimes, plus fishers right across the road. I once found a mink on a hen trying to kill her on a cold winter day. From my...