My 8 week old roo just kinda attacked my other, much smaller roo (same age). This is the first time he has ever done that. He grabbed the back of his neck with his beak like he was biting him and held on forever (while I am screaming like an idiot). The poor small little guy was making a cry like sound. The little guy just started his teenage crowing so could that be it? Doc (my big roo) has been crowing for weeks. Is it like a hormone thing like dogs do? I thought they wouldn't start fighting until much later?