I have a rooster with black spots on his comb. He does not look sick. The black spots look like little black dots like a line but not infected. He does not have any pus coming from anywhere. He is in a pen with 3 hens. I am feeding them layer crumble feed and layer pellets. Can anyone help me figure out what this is? I have looked on the internet for the fowl pox but it does not look like that.