I have a year old Barred Rock that is on antibiotics for a "fecal infection" (vet term). She's been on them 2x/day for a little over a week. She also is showing signs of severe broodiness. Her diarrhea is now MUCH worse--like water when I make her leave a nest box. Her butt is covered with gross poop. She's all puffed up and aggressive to the other chickens. I isolated her in our bathroom, but she hasn't gotten better, so I moved her back to the coop. This doesn't seem to affect the others for some reason, but I'm afraid it might. She has had another bout of this a few months ago, but it's much worse now. She's never laid eggs. I don't have a separate pen and this is starting to look like a hopeless case. I've never had chickens before, so I don't know when to give up! I am stopping the antibiotics as I think it's making her worse. Can illness cause broodiness? Help! I'm at my wit's end!! How does one put a chicken to sleep? Any suggestions as to what to do?