Hi everyone. Our first winter with our flock of 4 but soon to be 6 is approaching and I am wondering if I should put a small heat lamp in their coop to keep them warm when the temperatures start to drop. I've heard that it shortens their lives but by how much? We live in South Eastern New England do our temperatures can go below freezing but seldom 0. Also, any ideas on how to keep snow out of the run? All replies are greatly appreciated! Thanks!