Hi BYC! I have had this Rhode Island Red chicken for around 5 yrs. Recently, (for a few weeks now) she has been fluffed up, and her legs seem to be out farther than usual. She hasn't laid for a while. She crouches down a lot and doesn't stand for long periods of time. Her usual spunk is gone. It has gone from never letting a person touch her, to us being able to pet her. She still has an appetite. Help! What could it be?