One of my hens was laying around this morning. She has poopy feathers around her rump. We have tried yogurt before when a hen is acting funny so we tried that. Didn't help but she did eat it on her own. Then we tried a warm soak for 20 minutes, and set her in a box in the dark. She basically tucked her head into her feathers and slept for several hours but she was standing while doing this. Then we took her back outside, and she had watery poo. We threw some scratch on the ground and she ate all of it, but after a while she was laying down while eating it! She drinks too, so she's eating and drinking. But she just wants to lay. Not stand. She gets yo every now and then and pecks or gets a drink but then she just sags back down. What should I do?? No other chicken are sick. They are all 3 years old. Never been sick or exposed to anything.