My pullets and young Bantam hen spent their first night in the coop....I was a nervous wreck. Worried that it would be too cold for them (low 20's), and they weren't well enough acclimated to low temps, I put in a 100 watt light. The baby monitor was going to help me get thru the night. I've seen coons and possums in recent weeks so I thought I'd hear them if there was something trying to get them. What a miserable evening I had! The banty could not settle down, too much light, she was used to being in the cozy garage when it's dark. She never shut-up! Beep, beep, beep-beep, beep...on and on for 2hrs. straight. She was constantly scratching and throwing wood chips. She harrassed the 2 standard pullets, who I think just wanted to settle in. She was so excited/driven/spastic that she upset them and they strarted squabbling. All this coming loud and clear thru the monitor. I thought I'd go nuts...I turned off the light, worrying it wouldn't stay warm enough, but they had to settle before something awful happened. I gave them a night light (they're used to it) and left them. In less than 10 min. time they had settle down and made their going to roost sounds. That was it, after 2-3 hours of noise, frantic scratching, and arguments. I couldn't believe it. I didn't hear a peep out of them during the night. There was ice in the waterer this a.m. but not frozen solid, even so, I felt so badly. I plan to buy a red party light bulb for a little warmth if needed tonight. Man, what a crazy, disturbing, worriesome experience. Anyone else use lights for warmth? What has your experience been?