The more you try to put a species into a box, the more you will find yourself frustrated or disappointed.
We like those little boxes because it makes things easier. So we take species and morph them into what works for our needs. We took a wolf and over the course of 10,000 years we carefully created breeds that help put Dogs into nice little boxes.
Parrots are only a few generations removed from the wild in most cases, and there isn't any concentrated effort yet, especially with the larger birds, to breed for personality or other traits. They are bred for colors and numbers because people will buy them regardless.
To try to narrow down the personality and quirks of an entire species is really like trying to pick a random wolf who is going to be most like a golden retriever.