My biggest buff orphington has a very pale comb. She seems tired all the time, and she doesn't sleep on the roost anymore. She sleeps on the floor in the corner. She still eats fine. We call her big mama, cause she has been the biggest and the boss! But she doesn't seem to have a lot of interest in being the boss anymore. Also she seems to have a droopy but? This has been going on for several weeks. Any thoughts?