Not silly at all. They are cold tolerant birds and the coop is small, but it has to be ventilated, so it gets cold. I went with a heat lamp. The red light you see in the christmas lighting picture is the heat lamp. It’s mounted high in the coop with a guard and set up on a Christmas light timer. I can change the timing but I try to light it often enough that the water does not freeze and the coop stays nice and dry. I was told to use a red light so as not to over stimulate the chickens. If it’s around 10 degrees the light runs every 2 hours for 30 min, but at freezing it really only runs about 3 hours a day.