Feather and weight loss

[pkforever]

Hi all!! Haven't posted in a very long time but I have a BO who is going on 3 years, her and her coop mate both went through a molt about the same time, she started first. My other chicken a GLW has grown her feathers back and seems just fine. But my BO hasn't grown most of her feathers back and has lost a noticeable amount of weight also her comb has been rather pale lately. I haven't changed the way I feed them or water them. They started losing feathers maybe a month ago... I inspected her and saw no signs of any parasites... Her poo seems normal to me. Any suggestions??

 

[Buffygirl]

Is she eating and drinking? When is the last time she layed? Is she sitting down a lot?