I have been keeping chickens for about ten years now. They have always been exceptionally healthy. But it has been a long cold winter here in NH, so tjhey are more cooped up than usual. About a month ago, I noticed that one of my chickens has her eyes stuck shut. I have cleaned them several times with a warm wash cloth, and her eyes will be open, but then a couple days pass, and they're shut again. I tried neosporin after washing them, but they gunksup again after a few days. Yester -day I picked her up to try again, and noticed her face smells like yeast. What should I do? None of the other chickens have anything similar. She is eating and drinking, but with eyes closed, she does not jump up on her perch. I'm worried about her!