Hi~ I live in Michigan so we do get pretty cold, bitter winters. I have a heat lamp in the coop that is temperature controlled to turn on when the temp in the coop drops below about 38-35*. Is that too warm for them or too cold for them? I read in the last issue of BYP that keeping it too warm for them isn't good for them and it's almost like they are wearing little down coats! I did research the different breeds I have and all of them have been classified as being "relatively tolerant of cold" and they don't seem to mind coming out when it's snowy. I have Rhode Island Reds, Orpingtons, and Ameraucanas. What are your thoughts on warming the coop and what are your practices and guidelines for keeping your chicks warm?