My OE bantams have huge combs-- and winter weather gets well below freezing here in NW Michigan... Their coop is WELL insulated, and I plan to have a small heater set to 40f in there--- but they'll probably insist on using the run no matter what..... I've heard that rubbing vasoline on their combs helps--- any other suggestions? And how MUCH vasoline??? And is it only nessisary for single combs?? What about their wattles??? I'd hate to have to keep em indoors all winter! Thanx!