OK, here is the deal, I have been around chickens since child hood on the farm. Raised them by the thousands. Unless you have a game breed a fight to the death is unlikely. However, when they do fight there will be one of two things happen: 1. they will spare and one will quit and quicky run with no blood shed. 2. They will spare and there will be a little blood shed but not death.
Let them fight under your supervision to make sure they will not fight to the death, one will come out the winner, and the other one will run from the winner, let the winner chase the loser as this establishes who is boss. This will be a one time deal as the loser understands his status and is allowed to stay close to the flock but not mate.
However, LOL, every now and then when the King rooster is not watching the underling will do a quick mate and run like the devil as he knows the King is gonna be on his butt. The King will not chase him very far and within 5 to 10 minutes the underling is allowed to be close to the flock again.
Most people want to treat animals like they are human, ie. put a dog on a vegitarian diet, etc. Let the animal of any specie be themselves yet not letting them kill each other.
If you put any animal by itself, it will have a shortened life. One response above was a correct and proper response, Make a pen for the underling and give him some hens. Everything else I read was trying to make a animal a human. The only other options are to let the roosters decide who is boss and you dont have to build a pen.
Now, there is one other option, get about 12 or more hens and some of those hens will eventually go with the underling. So you will have two seperate flocks co-existing with each other and will not have t build a pen, p.s. even with 12 hens the roosters will still fight at least once but this is nerver a death fight.
I could say so much more. /but gonna stop here.
Edited by hytop3 - 12/10/15 at 9:06am