Pookie came to live with us at 21 years old as a non flighted bird. She only flew like a rock, straight down. She needed to learn flight as that would keep her safer if she fell avoiding those crash landings on our tile floors. I did the same thing in our bedroom standing about a foot away from the bed than launching her off my wrist a little upwards in trajectory. At first she was just flapping to balance her landings then as she got stronger she could levitate a bit and land softly. She advanced to being launched from a few feet to across the room and she was so exuberant as she gained control. I think flight is a confidence builder for parrots. Now she can fly like a jet with tight turns and pinpoint landings but often just climbs around her in/on the cages and the furniture. Since we have multiple birds I think it is also a safety issue so escaping from a bully is easy.