We put our girls out in the coop today, but since it's Maine and winter won't let go, they're out there with lots of shavings, half of their brooder box, and a 250w red heat light. I left the pop hole open today (overcast, windy, yucky) and the temp inside was a toasty 75-80 degrees which is what they liked when they were inside. So, cross your fingers! I love those chicks, but the poop everywhere was just too much, and I didn't have the heart to not let them out to run around my dining room several times a day! The girls will be 4 weeks old tomorrow. This chicken stuff is fun!! Thanks everyone for your GREAT advice!!!