@SmolParrot Dogs are not a good comparison; they are all the same species. There are 350+ parrot species and it is really not the same. One of the reasons budgies are so adaptable to companion animal life is that they are from an extreme climate, the Australian Outback. This helped them handled neglect better when they were first brought into the pet trade before humans knew how to care for them. Budgies are also highly social and intelligent which is how they manage arid and extreme desert life.
Actually dogs are an interesting example BECAUSE all dog breeds are considered one species and yet there is such huge amount of variation in trainability and other qualities between breeds and between individual dogs within a breed. Dog breeds themselves represent a significant amount of time and effort dedicated toward selecting for a set of desirable traits. A dog that is good at scent tracking. A dog that is able to herd reliably. A dog that is small, yet determined enough to go to ground after prey. Trainability in dogs is often related to how closely they needed to work with their human handlers. Dogs bred for herding and certain types of hunting are quite people-oriented and have a high work drive, while other dogs were developed to follow their instincts and work independently, like livestock guardian dogs.
Bassett hounds are notoriously hard to train, but they are natural scent hounds. Border collies are highly trainable and can be taught a wide range of commands, but they tend to get into a lot of trouble without proper guidance.
Yet one thing that all dogs have in common is that they have been domesticated for a very, very long time. And during that time, a good deal of effort has been put into weeding out undesirable behavior and shaping dogs into obedient companions. In contrast, many parrot species have been wild-caught, historically. Very few species of parrot have been "domesticated" to a large degree. Budgies are one of the rare exceptions as their small size and adaptability has allowed them to be bred in captivity for a relatively long time.
But the entire history of budgie aviculture is a drop in the bucket compared with the amount of time that dogs have been domesticated by humans. I don't think any species of parrot is really that far from a "wild" state, genetically-speaking.
Just something to think about the next time your parrot refuses to behave. Even if he was hand-raised and spent his whole life around people, he still has thousands of years of jungle/desert/whatever instincts hard-coded in his DNA. It is no surprise that he sometimes has trouble fitting in to the urban jungle.