I got my new chicks today, didn't expect them, so no brooder set up at first. I had to take them with me on errands (OH temps) and finally home to sit while I wipped together a mock up brooder. Well one was over on his side, eyes closed, not with the group. I tried to get him warm, but he looked hopeless, so as a last resort I decided to put him in the incubator. Well he perked up after a half hour, now he looks fine. But should I keep him in the incubator overnight just to be safe, or is it ok to return him to his buddies? They are out in the barn (unheated barn but with a lamp) maybe the low will be 35 F tonight.