We have 5 chickens, the are red sex linked laying hens. For some time one of them was broody and we stopped that by putting her in a temporary time out. She shortly went back to laying but for the last month has ceased. I noticed some extra feathers and assumed that they were molting but I got a really good look at her today and she is the only one. I want to correct what ever is ailing her before it gets out of control. She is eating and drinking, I gave her some and the others some rolled oats and she was very interested in eating them along with the others. The only symptom I can see is the loss of feathers. Does anybody know what I need to do from here?