I can't say I agree here. I've got a few breeds with extremely large single combs (and wattles), and they get frostbitten every winter. One was in a breeder cage (indoors) this winter, so was never even outside, so...no moisture on his comb. He did get a good amount of frostbite on his comb.Clay
It is NOT the COLD or even a lack of heat that causes frost bite.... it is MOISTURE. This last cold snap we had was really dry so I don't think anyone would have had too many issues with frost bite around here. BUT the first one it was not as dry and I had about 3-4 roos get frost bite pretty bad. It was strange too as I have 10 pens all the same and it was the roos in the middle 3-4 pens. My guess is the moisture from ALL the pens managed to settle in the middle of the coops for some reason.... maybe the wind blew it to the middle. My coops are well ventilated for sure I made no attempts to make them air tight. I have a 10 inch over hang at the front of the coops with just hardware cloth over it at the peak. There is also lots of gaps in the wood too so air can move. Moisture was the ENEMY in my pens.