We got an 8 month old rooster given to us a week ago. When we first got him, i noticed the tips of his comb were black which i thought maybe had been from frostbite. Since then, his comb has become more black and he has a couple spots on his waddle. He is not active at all and his tail feathers are droopy. I had posted in another thread about him being bullied by my hens, but they dont mind him now. I have no idea whats wrong with the little guy and im worried that something is really wrong with him. He is eating and drinking fine. Any ideas what could be going on??