My Golden comet has been lethargic and just standing outside the coop for 2 days. She also has diarrhea. I put her in a dog kennel and brought her in the house last night because it was 27 degrees outside. She is avoiding the other chickens and they are avoiding her. From what I've read, it sounds like it could be coccidiosis. Should I isolate her? They have a huge run fenced in with electric poultry netting around the coop. The other 8 so far are not sick. How do you get a definitive diagnosis? Does it ever go away on its own or do they die from it? Where do you buy Corid? Many thanks in advance!