Looking for suggestions/advice regarding our buff brahma bantam hen who is obviously not well these last couple days. She is 4 months old, one of 5 chickens. She recently spent quite a bit of time in our raspberry patch and shortly thereafter had some raspberry diarrhea. We figured it would pass, but she appears to be getting sicker. She has become lethargic, isolationg her self from the others, not eating or drinking much that we can tell. Her stool became green and watery for a time and is now a mix of white, reddish-brown, with a green watery tinge, but has thickened up in the last day. We currently have her isolated from the other chickens (in the house in a dog crate) until we can figure out if she is just recovering from too many raspberries or something more serious. I fed her a slurry of yogurt mixed with her regular food and water with a syringe with moderate success. We have put a few drops of apple cider vinegar in her water. Any suggestions would be most appreciated. These chickens are like pets to us and much beloved by our children. We would be so sad to loose her.