Can you train a parrot to spread it's wings?

 
Can you train a parrot to spread it's wings?
I think it would be cool if I could train my parrot (in my pic) to spread her wings on a voice command? Anyone know how I could do this?
I guess it is possible i mean it sorta does that on its own cause it is a bird but i mean you can just like you would train a dog i think we trained our old bird to whistle a song i guess it is possible!! Hope i helped!!!
Its a Quaker, in the picture.

I trained my Cockatiel to spread her wings when I say "pretty bird"
The way I did it was, whenever she spreads her wings I would say "pretty bird, oh your such a pretty bird..etc" I then give her a head scratch/preen.

I didn't mean to train her, it just kinda happened.