Yesterday I took in a partially blind chicken from someone who keeps hundreds of chickens. She was born blind in one eye. They had contemplated putting her down because she is constantly picked on. On our drive home I noticed she kept coughing. When we got home I fed her and she ate 2 huge handfuls of food. She acted as though she was starving. Her cough seemed to get worse after eating and she kept moving her neck around as though she was having a hard time swallowing. I also noticed an odor coming from her. I have cats and to me it smells just like when a cat has a respiratory infection. This morning her crop was still full. I have her isolated and gave her a bowl of water. She probably drunk half the bowl of water (small bowl). I have never seen a chicken drink so much water in my life. She also seems to have a slight clear nasal discharge. I don't know what to do. Opinions?