Thank you, I just hope I can figure out what is going on with them. Most of the flock has runny stools. They have all been treated for internal and external parasites including cocci. I have also treated the sick ones with tylan 50 but I worry about using antibiotics for unknown reasons and the antibiotic no longer working so I am only using it if I am pretty certain there is a respatory problem. These chickens are much harder so far then any of my goats. It seems like there is so much information on treating my goats when they are off but all I can find on chickens is information suggesting on culling the whole flock and starting over. I do not want to do that unless I am positive they have something that is a death sentence for them and future chickens. I will continue to research and hope I can figure out what is going on.Wow that's terrible! I am so sorry.