I'm worried about my 9 month old ISA Brown. I think she may have been from someone who bred an ISA, which I know is a no-no. I bought 6 of them and all but 2 died shortly after I got them. The one is healthy and happy, but this one has always been sickly. She hasn't even grown a comb or started laying. She's never been this bad before. She has been hunched over and today I noticed she has diarrhea. She feels very light for her size. She had Coccidiosis when she was younger and had similar symptoms.I put her on corrid and she got better. I put her on corrid again, but it doesn't look like it's working.