Just think, those parrots live 40 years or more!
25 years ago, Mrs. 2 worked for a family of barners. Her direct boss had a Cockatiel. He started going out of town on weekends and asked Mrs. 2 to bring the bird home with her on those weekends. It took my about 5 or 6 weekends, but I taught that bird to whistle the Alabama fight song.
The following Monday, Mrs. 2 was making coffee for the office when her boss screamed her name. "Joey" was in perfect pitch. Her boss was not amused. Good thing Mrs. 2 was a good worker.