Hello, I am in Salt Lake City and next week it is suppose to be a high of 12 and a low of -2. I am a little nervous about the girls. They are in a dry coop with hay and no heat lamp. I am just worried about the -2 degree part. Any tips or suggestions? Last year we rarely used the heat lamp. I don't want them to get use to the warmth and not be able to adjust to the drastic temps but with the -2 I might have to. The lamp is outside the coop, by their door. Thoughts?