Cocoas mom, he is saying the foot is going forward not up into the feathers. I do have to wonder a little about that. Yes, they pull them up to nap quiet often. But what exactly does this poster mean by forward? Sounds a bit odd to me but maybe what I am picturing in my mind is not even close to the reality of it.
At any rate, this is an excellent site to read up on budgie behavior and what it means: