So this is my first year with chickens, I'm 15 years old, and live in Northern Montana. So far this winter it has been brutall. We have about 1.5 ft of snow and the past few days it hast gotten above 12 degrees. I have a heating lamp in the coop that gets the coop about in the 20s during the day, but I am wondering if it is ok to leave it on all night? That is what I have been doing and I'm worried that they are being forced to lay to much....I dont really care if I get eggs right now , in the winter, I just don't want them to get to cold. So do I need to shut it off for part of the night so they can sleep or can I just leave it like that? They have already suffered from frostbite too so idk? Do I need to keep the coop cleaner and put more jelly on their combs? I'm just kind of worried that I will shorten the length of their life by keeping it on... Thanks for the help