I'm not sure if it's ascites. She certainly isn't eggbound. Our leghorn, Fiona, is 3 years old and has had a swollen abdomen just over a couple months now. I took her to the vet and they think it's likely an infection. They gave me antibiotic injections to give her. They actually seemed to work however she swelled back up. I'm actually not very confident in the credibility of the vet we went had (the vet we go to works with chickens and I saw the vet that didn't have as much experience as the other at that place). Why I'm not confident is that she said Fiona had/has a fever of around 107. Don't chickens have body temperatures just above 100 degrees due to their metabolism? Secondly, when teaching me how to inject the antibiotics, she said to make sure and not puncture the lungs. The area was near the breastbone. I then looked up a chicken anatomy to help me out and the lungs are no where near the breastbone. Yeah, there's organs there but not the lungs. Unfortunately the vet costed us more than we're comfortable with (x-rays were done and the office visit fee has gone up) for a chicken. As much as I hate to say she isn't worth the money that's how it is. She seemed to be doing okay despite the swelling and runs, eats, drinks, but no laying. Lately though, due to the summer heat and/or some more buildup, she's a little slower. I've been hesitant on the idea of draining fluid vs. letting her eventually pass because I'd hate to let her suffer more than she likely has. There's also the choice of taking her to get euthanized to end it but the fact that she'll push herself to run, eat, and drink keeps me from choosing that. I have looked up some tips on draining because I think if I can handle giving her shots then I can probably handle draining. Of course, the draining likely will only give her more time and take the load off which is a good thing but she'll eventually pass due to whatever to root cause is.