This is Makpa.  I was told he does not let anyone besides his person pet him.  I got to the point where I could preen his head while he was on his person’s arm.  I took my sight away from him for one second when he latched onto my thumb with his beak.  He refused to let go as he dug deeper into my thumb.  When I finally pried his beak from my hand with my other hand his person caught him from falling to the ground.  As my thumb swelled, Makpa called, “Get it…Get it…Get it.” His wanted my thumb again!