My girls are molting right now and we are having very cold temperatures, teens and twenties. It is approx. one year since they starting laying and I wasn't supplementing with any extra light so I know that triggered it, but I just went out to change out their water and noticed that one of my ladies is completely bald in the rear and has very little elsewhere and two others are missing most of their neck feathers just in the last day or so. What can I do to help them make it trough the cold or should they be fine? We did just add a heat lamp to the coop (right now), but I don't know how the one missing most of her tail feathers is going to stay warm. OR will she???