Last night was the first night out in their new coop for my little (2-3 wks.) chicks. They've been bursting with energy in the house brooder, and needed more space. I've been taking them out over the past few days to spend a few hours in there (with a lamp of course ), and since last night was only supposed to get down to 40, with a warming trend on the way, I figured I'd just leave them out there. The remote thermometer showed that it was maintaining (plus or minus a degree or two) about 85 under the lamp. I only woke up ONCE to check on them , and they were just fine!! Not directly under the lamp, and not piled, but in a little line circling the lamps rays, shoulders touching. And this morning, when hubby peeked in, they were all up and about running around. It's kind of a relief to have them out of the house (the mess), but I sure missed hearing their peeps when I got up this morning... PS - their coop looks really spooky, with dark red light glowing from the windows and vents...hehee.