I have an older hen who has become very lethargic (she has always been top hen, and now shows no interest in eating). I checked her yesterday and she had a little diarrhea on her feather, but nothing else. She was drinking last night. She is still walking around and last night go back up top in the coop, but slowly. Today, I notice more runny stool on her back feathers. I tried to palpate her to see if there was an egg stuck, but don't know. It does seem larger or more swollen than my other hens, I think. I am bringing her in now, giving her water with apple cider vinegar. Can anyone suggest what else I can do for her?? Or check? Any suggestions would be appreciated.