My rooster, Charles, is having troubles with his neck. One side is bald except, for lack of a better discription, little nubs where the poofy part of his feathers used to be. The skin is red and very hot to the touch. Some of the feather nubs are bleeding and it seems painful when touched. The rest of the feathers surrounding his neck and the red area are very thin and brittle. I am not sure whether there is something wrong with his skin or my male guinea hens are attacking him. In either case, I need to know what to do to fix it.