"The Boy" here. Piper is a very smart bird. He has figured out that if he stands on the track pad of my laptop it is difficult for me to use the laptop and I have to pay attention to him. Even if I move him just next to the track pad and scratch his head he will move back onto the track pad so that he know I am paying full attention to him.
So the other day it was business as usual and Piper was on my track pad getting a head scratch and Joey came and landed next to Piper. I took the hand that was scratching Piper and used it to scratch Joey for a little bit. I had every intention to go back to scratching Piper. Piper didn't see it that way though. He looks up at me and gives me a look. Then he backs up over my keyboard and poos there! It all seemed very deliberate to me.
As I was typing this post Piper came and I had to move him a few times in order to finish typing!