I don't know HOW he did it-but Mr. Bird solved his puzzle. The peanuts were extracted, the puzzle removed from its chain, and then carefully placed in an empty food holder for a refill. Mr. Bird is very particular about the placement of certain items in his cage, so by placing it up high, and in a place of honor, he lets me know that he was either pleased with the puzzle, or more than likely, very pleased with himself.
We celebrated with a blueberry feast-all hail Oliver the Parrot!
I've ordered a terribly expensive (like 50 bucks please don't tell Mom) dog puzzle for the Border collies, because I really want to see if they can work it. Even I shuddered at the price, but the urge to know if it would work over rode common sense.