I went back to put the chickens away today and noticed one still out in the pen. She was laying with her head and neck bent under her breast with her eyes closed. She was still breathing so we went in and every time we touched her she flopped around and rolled. One time she opened her eyes and slightly stood up. Then she started walking, while she walked slow she kept tilting her head up like she was looking at a hawk in the sky. She then just fell down and flopped around again. I'm pretty sure she will die by morning. What could be wrong, no other chickens seem to have anything wrong? I did just notice some scratch I threw out didn't get eaten and has some mold on it, I quickly raked it out. Could this be what happened. I just noticed the mold today and it can't be any older than a day old out there....please help? P.S. The hen is just over a year and she is a red sex-link. Also, I don't see any droppings around her so I couldn't tell you what they look like.