I have a small flock of teenager chickens. Recently, a few of them have started fighting each other. They fluff out their neck feathers and stare each other down a bit before a small tussle. It doesn't last long and no one gets hurt. My question is more on whether I can finally determine which members of the flock are roosters by this behavior. I have one that is crowing, but he isn't the one fighting. So are these possibly just females working out the pecking order or are they certain to be males?