I need to make a decision in the next 1/2 hour (before dark) and need some help. Here's the situation: My BR hen is in the unheated mudroom right now, under a brooder lamp because she is in the middle of a hard molt and I decided today that it's just too darn cold out for her to be in the coop, and I don't have electricity out there. She was shivering pretty bad and her tail was drooping. I only have 2 other chickens and I'm worried that they'll be too cold tonight without chicken number 3 to huddle with. So I'm leaning towards bringing the other 2 into the mudroom for the night so they can all be together and stay fairly warm. Does this sound like a good idea or bad idea? If I keep the light on them all night, will they not sleep? They've never had artificial light. Please give me your quick opinion before the sun goes down. Thank you!