If it is Ascites, don't let the negative reports get you down. If you read about it, the articles say it's liver failure, etc. etc. I'm not sure what causes it but I do know my hen lives a normal and happy life and just fills with water every three months that has to be drained. This has been going on since late Spring/early summer so it's not a death warrant if she has it. She still lays fertile eggs and I've hatched her chicks. She was one of my first chicks, a Black Sex Link and they are the tamest ones I have. She doesn't seem to feel anything when I'm draining the water out of her "bag" most of the time she keeps eating.