I have 4 chickens. One has had diarreha for a month I, she seems okay but does not lay. I have been giving her cicer vinegar. Now a light brahma is feather light. She seemed fine but stopped laying and now all of a sudden is nothing but feathers on bones. I have started feeding her soft cat food which she eats. She is not excited about the layer pellets. Her droppings appear normal but I need to go and really look closely. Any ideas? She does not seem long for this world.