This video teaches you how to train your parrot to show its wings on cue, often called the big eagle trick. Please read the article linked above as it goes through step by step how to teach the Wings trick to your parrot.
I know the video is long but there are just so many helpful tips and progress that I wanted to show throughout so please watch all the way through. This video is the culmination of two weeks of training Truman the Cape Parrot how to show his wings on cue. This is video footage from actual training sessions so you can see some of what to expect when teaching your parrot to show its wings. Good luck.
You can buy the same kind of perch for teaching tricks to your parrot at my online store: