I live in downstate NY and this weekend we are supposed to have highs of 18 degrees and lows of -5 (windchill reaching 30 to 40 below zero). My husband and I have four chickens (two americana and two rhode island reds) whose coop is a converted swing set. The actual coop area is above ground, covered in shingles and has a hinged front door for collecting eggs and small opening on the side for the chickens to come in and out of. We are currently doing the deep litter method of bedding for them this winter with pine shavings and leaves, and plan to turn it this evening before the cold gets too bad. My question is: Will that be enough for them to comfortably make it through the weekend? They often sleep cuddled together and are not showing signs of frost bite. We are just concerned this may be too cold for them, and maybe we should bring them inside. Any thoughts would be great. We don't have the opportunity to add a heating light over the weekend unfortunately.