I have an 11-year-old hen who is having some breathing problems and it’s supposed to get down to 4° in a couple of nights. She can no longer roost and rest on the floor of the raised area. I have six other healthy adult hen in the flock, I wonder if I should bring her in. For the night. I worry about her, adjusting to warmer temperature in the day. It is hard to find any information about hens this old, so any advice would be appreciated. CULLING is not an option.