It's not cocci. I've been treating with that since hatch last Saturday. When I hold this chick in my lap, it wants to put it's head totally back onto it's back. The back of the head will be touching the back and the beak will be pointed upwards. It's croop seems full. I feed chick starter. This is the first chick out of 100 or so that has ever gotten sick. I've never lost a chick before. I gave it a few cc's of vitamin water and wrapped it in a washcloth and then sectioned it off from the other chicks. The only thing that I can think of is some kind of injury. I have the 6 day olds and then some that are several weeks older all mixed. Does this sound like an injury or a disease?