My 8 week old chicken was running around the pen yesterday,eating and as happy as could be. This morning I noticed her all hunched up in the corner, with a mass of runny,bloody droppings around the pen. She died about an hour later. She had two pen companions of the same age, and I have moved them to another pen in case she had something infectious like Coccidiosis, but they are fine as are their droppings which I am now monitoring carefully. I had moved them from an indoor pen to one on the grass, but had rubber mats underneath it. As I said, right up until last night she was healthy, and eating and drinking normally, and they have always been fed medicated crumbles. Can Cocci cause these violent,bloody droppings and such a quick death? And what can I do to protect the other two chicks? ANY advice would be so welcome. Thank you.