Two days ago one of my Ameraucana bantie roos was acting funny- sitting around all fluffed up, not interested in food. Then yesterday I found him off by himself in the corner of the pen, all fluffed up again. He was well enough to run from me and avoid being caught for a few min, but when I had a look at him I noticed that his comb is dark greyish-black. I think he got locked out of the coop one night, and got frostbite (even though he has a pea comb). I have him isolated with a bantie hen (for warmth at night), in a small run wrapped in plastic, with a small barn style dog house. Do I need to do anything else for him? Should I dubb his comb? His wattles are fine, they are verry small and completley covered by his beard and muffs. This bird is very valuable to me, and I don't want him to suffer needlessly.