It has been a trying couple of weeks for me, not so much my girls, but last week at 5 1/2 weeks of age we had a sort of nice day for Nw Ohio so i let them play in their run with their coop door open. unfortunately, they decided that evening they were NOT coming out of the coop and were NOT going back into our garage, so we installed their heat lamp and they spent the night in the coop. It got down to 34 that evening and i couldn't get the coop warmer than 60. i felt horrible because they looked so cold that next morning. they slept almost entirely the next day and were not themselves. i felt awful. So, i moved them back into the garage for another week and they didn't go out until yesterday, it was a balmy 70 deg. day. Although our winds were horrible all night, the coop without the lamp stayed around 60 and each time i checked them, they were all content so i left the lamp off. Around 4:30 AM, i checked again and their coop was less than 60 so i turned on the lamp. They awoke and began eating, etc. The coop got pretty warm so i turned the light off after about 15 minutes and they settled down and went back to sleep. So, i am going to assume that this light is keeping them awake and may be messing up their internal clocks? This is a regular brooder light and maybe a little too big. Is there an alternative light source I can try to offer some heat but may not be quite so bright, other than a light bulb. I'm trying to avoid becoming an OCD chicken owner as i am an OCD dog mom, but i'm having a difficult time -- they seem to be doing just fine, however. They will be 6 weeks tomorrow so I would like to leave them out permanently. Our weather this week is going to be pretty decent as far as temps go. yay..... Thanks!