Hi dmccann, I tried to find anything that would link a heart problem to cocci, but I didn't find anything, this hen could have had a heart defect too, it's really hard to say with out a necropsy. I lost a young hen to what we believe was a heart defect, and also a duckling, I don't know that for fact but sometimes you just know... more so with the duck than the chicken. Defects happen, we just don't see the internal ones till it's too late most of the time which is for the best because we couldn't do anything about them any way. If you really love having chickens then you need to keep going, they bring such joy and then the fresh eggs thats a side benefit. We all have lost birds and it's heart breaking but we somehow learn and keep going on, I can't imagine not having them. I am so sorry you've been through so much, I just hope some how I have helped you to see it's worth it in the end.. Blessing
