Just to be clear, the bird did seldom, but periodically, see a vet, and I think he's a pretty prominent avian specialist. He didn't seem to think there was a lot that could have been done for Spooky's feather picking. He recommended putting the bird on an antidepressant and I chose not to go that route, right or wrong.
Some of you sound like this bird was chronically ill for a long time and that the situation was ignored. The truth was that he generally was a seemingly very happy, robust, perky and energetic bird with no signs of issues other than feather picking and the aforementioned infrequent seizures, which, again, were relayed to the Doctor. The really obvious issues didn't pop up until the day of his passing, maybe an hour or so before he died. Had he not passed on Sunday, I would have taken him in on Monday, but he went downhill so incredibly fast.
Here is his Dr, who I think is quite good and has an impressive background. He offered to do a free examination on my next bird, and I will take him up on his offer.
https://www.drexotic.com/about/jeffrey-r-jenkins-d-v-m/