Sally is a yr old Deleware hen A week ago I noticed that her feathers looked ruffled but our temps are in the teens at night. She stays alone when with her 7 sisters. I've brought her in the house (mudroom) in a dog cage with food and water and she seems content. Drinks alot. I think her breast bone protrudes but it's always been that way. When I let her back out, she immediately ruffles up, sticks her head in her feathers and will just stand there. She can walk ok. I've given her electroltes in her water. poop seems ok.called our vet to have her poop ck'd for parasites but they don't handle chickens. Not sneezing, coughing, no visible signs. The only recent change was that I switched from straw pine chips. (2 wks ago) Has anyone had this experience? Thanks.