So it's like 10* outside and has been for a few days. I have a Rhode Island Red and Comet(? cross between RIR and something else) and they would rather sit on the ground in their pen instead of hiding out in their coop. The coop has two heat lamps and has been sitting at 42*. I have a couple CFL's on a timer and as soon as the lights go out at around 10pm they go to bed in the coop for the night. I spread some straw out in their pen to make it more fun/comfortable.. they just sit there next to each other like they are nesting. Is this ok? I am assuming they would go up in the coop if they got too cold... or are they too stupid for that? Combs look fine, no frost bit. I am a bit concerned.