Hello, I have two roosters, they are 6 mos old. They are fighting over and over again. When they do, they get so bloody and red, from their combs to the end of their capes. My mom's friend told her that the roosters have to fight to see who is the boss. But my dad is worried that they might kill each other. Are they going to kill themselves?? Do they have to fight to see who is boss?? Thanks!!