30 Year old. Nanday Conure

[paco1846]

Hi,
In the last week or so my conure "Ira" has been fluffing most of the time. He's also become quite lethargic and bottom dwelling. His normal, loud squawk is now just a slight sound. He still has his appetite and there has been no change in diet. Could these be end of life signs given his age? I don't know if I want to risk taking him to a vet and undergoing tests. He hasn't been out of the house for more than ten years and it might be traumatizing.

Any thoughts?