I've been giving Corid for about a week now. The chick seems to get getting worse, instead of bloody poop now it just poops blood. Today is the first day I've been able to figure out (or guess) which chick it is. One of the brown leg horn pullets is slightly puffed up and hiding instead of eating and drinking. I forced some medicated water down her throat and put her in the garage brooder instead of out in the run with the others. She's with some younger chicks, which were all together with the bigger chicks until just a few days ago. I don't have anywhere to isolate her completely alone. She's about 8 weeks old, by the way. I have Corid in the smaller chick water (with the sick one) and Corid in the bigger chicks' water outside as a precaution. If the Corid isn't helping, what should I do next? We have organic yogurt, but it's strawberry. We don't have access to raw milk, but we do have unhomogenized whole milk. Will any of those things help? The chick that's sick went on an adventure two or three weeks ago into the neighbors yards, we chased her all over for an hour. I have a feeling that's where she might have picked up cocci. She was hiding in this rotting wood dog house full of old animal poop in my elderly neighbor's yard when we caught her.