On Wednesday i noticed one of my hens had wet feathers all around her vent and was very lethargic. I have had her separated from the flock for 5 days now giving her yogurt everyday and ACV in her water. She seems to be feeling much better and is not happy about quarantine but isn't back to her normal fluffy bottom. Do I need to keep her away from the other hens and if so for how long? Thanks!