To give an example of how much control these guys have, check out little Pi. I think he is a good example, because when they are active you would have no idea how much fluff they have. He can convert himself into a fluffy cone head. The bad beak bruise from from a crash, he has since recovered so do not worry
He is well loved and spoiled.
Normal active Pi, all feathers are streamline and tight against his adorable little body.
Happy nom nom pose. (adolescent plumage, shortly after window crash)
Then comes sleepy Pi. Who morphs into a fluffy cone head alien! (bruise was growing out, and he looked pretty gnarly at this stage...however he was actually more healed than the previous photo)