I have a chicken that is separated in the run so the feathers on her head can grow back. She has a tub that I made into a make shift coop with a roost. I've been bringing her in when the temps hit 30s because she doesn't have the other chickens to snuggle with. At what temp would you bring your single chicken in? I just don't want her to freeze. This is the makeshift coop I made her until she can join the rest of the squad. Thank you for your help!!