Hi, I have 14 chicks that are about 2 weeks old. I currently have them in a brooder box built out of a large tote. I feel like they are cramped and bored, and would like to move them into the barn to the birthing room, which has two large stalls on concrete that's totally enclosed ( so no chance of predators). I obviously know they still need heat, but my question is, could i put them in there and have a heated box so they could go in and out as they choose? Would they actually go into the heated portion or would they just freeze and die. I live in northern wisconsin, so its about 60 at night, and 80 during the day. Any advice?? Thank you!