I have had 2 chickens die in the same day and cannot seem to find exactly what it is. My worst fear is that it would spread through the whole flock. So I am wondering what is is, cures, and preventatives. Here are the symptoms: No noticeable difference in earlier days. The one died quicker then the other. The one that I did see in the beginning stages had her back hunched and didn't want to move. Her dropping were practically water. It graduated to lying twisted and thrashing. It DID NOT seem as there was any strange coloring or swelling on the head. NO mucus or fluid coming from the eyes or mouth. HELP!!!