I have 6 Cornish Rock chicks that are a little over 2 weeks old. They are in a large box and are getting feisty. It seems like they need new digs! At what age should they be put in the coop? At what temperature should it be outdoors before they are put in the coop? I plan on heating the coop with a 100 watt bulb, but do have a red heat lamp as well that I could use. I live in the UP (Upper Peninsula of Michigan) and our temperatures change dramatically. Any help would be greatly appreciated!