One hen out of a flock of 50+ has some strange symptoms while everyone else is perfectly fine. She is a roughly 20 week old Dk. Brahma, not laying yet. I found her two days ago huddled in a corner of the coop in the middle of the day when she would normally be outside. She did not struggle when I picked her up, instead she just hung her head. She was very weak. Her eyes, nostrils, beak are all clear with no sign of discharge. She is not coughing, sneezing, yawning, or showing any abnormal behavior of the sort. She's been in a hospital pen since I found her and is eating a little and drinking on her own. She shows interest in food, but almost appears to miss when she pecks at it. She can stand and walk, but does not try to do so. I've seen her take a few wobbly steps, but she mostly just sits wherever I place her. Today, she pecked at my fingers rather aggressively, shaking her head back and forth (like a dog) when she grabbed hold of a finger. This tells me she is not as weak as she was when I found her. She has V&E in her water and has had some grapes, watermelon, and garlic mixed with olive oil. Her poo is green and white and not frothy or foamy, more liquid than solid. She also had poo stuck to her feathers, but her vent is not blocked, nor abnormal in appearance. There was a bit of yellow stuck in with the poo on the feathers that looked like yolk in color. It was a very small amount. I thought she may be attempting to lay and having trouble? She sits with her rear end elevated.