I have a hen that I've noticed has been getting thinner over the last few days. She was still eating and laying up until today though. She is very listless, won't eat (not even peanuts which she always loves). I got her to drink by dripping some water on her beak. When I picked her up, to investigate her, she pooped, which I didn't notice until later. The stool was very watery and slightly tinged with pink. She's over a year old, and has been scratching around in the same dirt for well over a month now. She gets yogurt almost every day, and a mixture of layer/growth pellets (I still have 3 younger girls). I just started adding cider vinegar to her water. I can only isolate her by putting her in a dog kennel. She does not appear to be egg bound or broody, because she lets me pick her up, she just laid yesterday. She just wants to sleep. Every time I go outside, I'm afraid she'll be dead. So, a) should I isolate her? All the other girls seem fine (there are 5 chickens altogether) b) should I give her medication in case it's coccidiosis? Are there negative effects of administering medication if that's not what she has. c) what else should I do? There is no local vet that takes chickens.