I need some help. This is the second time that I've had a 2-3 yr old hen get sick this way. She is lethargic, tail half way down, puffed up a bit, loss of appetite, and the key symptom to both hens is drinking a lot of water. So much that when both were picked up, they puked water on me. A year and a half ago the first hen was sick for 3-5 days and recovered. She was later given away. But now this hen has the same symptoms. She was attacked by a gosh hawk and was antibiotics for her wound for seven days. Her wounds healed nicely, with stitches out on day 10, she was perky and well. Day 2 after ending the 7 days of antibiotics, she looked sick. I gave her some warm watered food with corn, calcium, and pro-biotic. She was almost back to her perky self again 4 days later...then today...crash...same symptoms. Does anybody know what causes this? Could it be bacteria in the soil? The other hen is fine and has been with her the whole time with no symptoms. I know it might be possible to wipe out her immune system with antibiotics, but the first hen hadn't any and why isn't her friend hen sick? She is now quarantined in the pen for a week while I'm gone. I hope she doesn't die. She is the coolest chicken.