I have one RIR cross, about 3-4weeks old. We had a bout of coccidiosis thru a run of about 14 chicks, and she was one of the worse off. They were treated, and then put back on a medicated starter that im going to continue for a couple more weeks. Everyone else bounced back within a couple days, but this little girl just sits in the corner, feathers ruffled, eyes closed. The only time she really gets up is when she sees me coming, and walks to me to hold her. I am now putting DE in their feed, and apple cider vinegar in their water. Any other ideas what this might be, or other remedies? Thanks!