I had a barred rock hen die last night. She was put in a rehab coop a month or two ago because of a broken leg but since then she had barely eaten or drank anything at all. We noticed about a week before she died that one of her eyes was very crusty. I have a leg horn hen that just lost both of her feet to frostbite in a cage right next to the one that just died and she has barely eaten anything in the last week. Does anyone know if this could be the cause of a disease that is spreading and how I could stop it before it kills the rest of my flock?