Hello! I am a newbie, and this is my first winter with chickens. We have been experiencing very cold (4-6 degrees F) at night here in Ohio. The coops seals up but has enough ventilation that there is not any condensation accumulating any where and is not excessively damp. They have 6 inches of pine shaving right now and the coop has been staying at least 10 degrees warmer than the outside temperatures. I have had to change their water many times a day, but even over night it is frozen, but not solid. I have also been offering scratch grains in the PM prior to roosting. I have been paying particular attention to their combs and feet watching for any sign that it is too cold. This morning, I found Ginger's comb like this: She is relatively low on the pecking order-- 4/5. The girls have not been "allowed" to go out of the coop for the last 2 days due to the very cold weather. Is this frost bite or pecking by the other girls from being cooped up? I have slathered her comb in vaseline and she is in the spare bathroom for now. Anything else I should do? Thanks for helping out a scared newbie!