My wife's parents have a 'tiel named Sunny. I have some pictures of him in my gallery. He was found; when my wife was a teen, long before I met her, her grandmother called her to come over and get this pet bird that had flown into her yard. She was thinking it would be a budgie, and pedaled over on her bike with the budgie cage precariously perched on her handlebars.
And it turned out to be a cockatiel. My wife's parents still have him. He's over 20 now, a venerable age for a 'tiel, and in great health. They still call him 'she' because they, too, originally thought he was a female. Sunny hates fingers, crows, and blue jays and loves vanilla ice cream.