How old are these "roosters"?
Are their pens adjacent? Is it possible for them to hop from one pen to another?
It is very difficult to understand your set up or exactly what has occurred from your third hand description. I appreciate that you were not there and are trying to relay information you have been told by telephone, so it is not surprising that it is confusing. The only certain way to establish cause of death is to have a professional necropsy done, so we can only speculate.
Having photos of your set up and perhaps the rooster might point us in the right direction but at this time of year, hormones are surging and there is a much higher likelihood of roosters fighting and even hens for that matter. If one of the roosters got caught or cornered somewhere that he couldn't get away from the dominant bird, it can end in death. With plenty of space, the loser will usually get away before it becomes serious. Bleeding combs due to fighting usually look much worse than they actually are, but without seeing the bird it is difficult to assess. It could also be that one of them had an underlying disease or illness that the stress of fighting triggered and it was that which caused death.[/QUOTE
Well the one that died was a hatch and he was 7 months old. I’ve recently purchased it on Saturday and put him in a dog kennel since I was constructing a coop for it.the other one which is still alive is 2 years old. I accidentally forgot to lock the door so it opened I believe. He was injured from kicking the cage but he’s a lot better now