I highly recommend CBD oil to combat pain, inflammation and anxiety. Our hen with terminal tumor got 5 weeks of quality life when there was “nothing” to be done. (Vets in Calif. are not legally allowed to discuss CBD oil.) We get it at the feed store.
We had similar symptoms from one of the 3 inherited Americuanas (when a friend moved) added to our flock of three mixed hens. We thought one of the new hens was egg bound from stress of moving (3 blocks) but the vet found a tumor. She extracted green fluid, indicating a liver, not ovary, tumor...