I went out tonight to close the coop door and noticed that one of my favorite chickens was laying there not looking so good. I accidentally pulled the light off the wall and it startled her and she went to walk and she couldn't walk very well. I picked her up and she is SOOO skinny. I held her just the other day and she seemed a little thin, but nothing like she is tonight. I brought her into the house and got her some water with Apple Cider Vinegar in it and some yogurt. And when I laid her down on the floor to give her some water she put her right wing out to try to balance herself and then fell over like this. Is it Mareks??