we don't heat our henhouse and our girls do great in winter but we are about to have record cold (for Nov. in northern NY) and have one in full moult. Should I be concerned for her? We have 5 - one broody (no eggs) girl has been stubbornly sleeping in one of the nestboxes, 3 on the roost and the moulter sleeps on the edge of the nestboxes solo so she isn't getting group warmth. thanks. (p.s. is it "moult" or "molt"?