I was at the feed store and there was this poor old girl sitting by herself. She looked to be very old and somebody had just abandoned her. The nice people at the store gave her to me as she seems too old to lay eggs and too skinny to eat. They know me very well and knew she would be going to a good home. She has already joined up with my belgian D'Anvers pair and is eating like a pig. She is fairly strong but refuses to leave the comfort of the coop and she huddles in the corner to sleep (instead of perching). Is there anything I should do special for this girl? Is there a possibility she is just sick and not that old?