Sheila has frostbite in her comb. Those wise in the ways of backyard chickens claim Vaseline or bag balm on the comb should prevent this and/or keep it from getting worse, so I'm going that route. I feel so sorry for her, and I'm worried it will only get worse as this weather persists. Sheila, however, doesn't appear to care. The weather service tells me that the current temperature is -8°F, feels like -18°F, and those chickens came running out of the coop into the run as usual at sun-up this morning. Nutters.