My brother found a cockatiel along a busy highway. Realizing that it was an escapee, he stopped and captured it and took it home. Every now and then it would get startled and its panic/flight instinct would kick in. It would fly a few laps around his apartment and land somewhere high up. My brother knew that if he just waited a few minutes it would figure out that everything is OK and come back to its spot on top of the cage.