One of my girls has been molting a couple weeks. It started with just her head, now her entire head and neck are bare, along with a spot on her back down near her tail. It gets pretty cold here, about 30 degrees F during the day and down to 20 degrees F or even colder at night. Should I be worried about her staying warm? Especially if the molt gets worse? At this rate, she'll be completely naked in a week or two. I would rather not put any supplemental head (afraid of fires) so I'm considering bringing her inside. I know there will be a reacclimation period when she gets reintroduced to the flock in the spring, but I don't want her to freeze out there. How cold is too cold for them?