Hello, We have been having a severe coldsnap for the last several days, and it appears it will last at least for the next week. Temps are averaging in the teens during the day, and dip down to about 10 below or more at night. I have done all I can think of to the coop to keep the cold out, but the temp in there is averaging around 5 degrees or so. I am terrified of putting a heat lamp in the coop, but do temps like these justify the risk of fire? I have put vaseline on my girls combs, but I'm pretty sure one of the tips on Doris Mae is frostbitten. Poor girl!! I want to put some more vaseline on all of them, but I'm worried about hurting Doris Mae's already damaged comb. What is the treatment/approach for this? Thanks so much!!