I have 2 polish and one assorted bantam chick that are 5 weeks old. I live in Utah and the temperature drops under 40 f at night still. They have all of their feathers but I’m worried it might get too cold at night still. I can’t put a heat lamp in the coop because I don’t have anywhere to clip it without it potentially causing a fire. I am willing to wait if I need to but they are getting big for the brooder and I can tell they are sick of being in it.