Hi Everyone, I've uploaded a picture of my rooster's whose wattle and some of his comb has turned a dark color and looks a bit shrunken. Why is the happening? Should I be concerned? Could it by frostbite? New England has just had some bitter cold temps and my coops is not heated or insulated. The other roosters look fine. This same rooster keeps shaking his head back and forth as if he is saying "no, no, no". Is that normal or is he not feeling well? I appreciated any advice. Thank you!