Woke up this morning to find my healthiest, friendliest buff orp lying on the floor of the run. Her head is all floppy, she can barely raise it. Her body is floppy too. Her feet are curled in. She coos when I pick her up very quietly. I isolated her, gave her some water with apple cider vinegar, which she drank and some organic yogurt, which she ate a bit of. She could hold her head up ever so slightly better after eating. She is 6 months old, and I have had her since she was 1 week, with zero health issues. The other chickens seem fine. She has not yet laid an egg. Thoughts? I am so worried about her. ETA: just gave her some molasses diluted in water, and am trying to find the Polyvisol, which I read can help. o/w will run out and buy some more this morning.