@PeaDawg, yes, if you know how to give subcutaneous fluids to a cat, giving subcutaneous fluids to poultry is definitely in your wheelhouse. Fluids can be given in several places. The place I usually give fluids is on the back.
@TudyBOT, this was a semi-hypothetical situation. Here at BYC, people always ask for non-veterinary options to deal with ascites. One of the ways is to drain them yourself, and there are many videos, pictures, and instructions showing how to do this.
You're right, draining them does not address...
I understand all of this, but for most people, a trip to the vet's office would cost no less than $100 just for an exam. Add in the costs of other diagnostic tests, and one could spend $300 to $500.