I lost one of my 6 1/2 week old pullets to what I'm pretty sure is Cocci and I know at least 3 of my other pullets have bloody diarrhea. The pullet I lost, and 4 of my other pullet chicks, have been on medicated feed since I got them around 2 wks. of age. Last week I purchased a 5 wk. old Silkie and a 2 wk. old Ameraucana. The Silkie had some bloody'ish stool, yet when I looked it up it looked more like shed intestinal lining. Since she was acting completely normal I thought that's what we were dealing with--especially given that she seemed a little stressed from everything. However, I now realize that it was/is apparently Cocci. ( I have no idea if I can give my chicks medication since they're already on medicated feed and it says not to give anything medicated while they're on it. Is this true? Or is there anything I can give them? I'm so worried about them and don't want to lose anymore. All of them, except for one, are acting fine. Sassy is normally peppy and well...sassy...but today she's very quiet and subdued. ( Please help!