I have a blue headed pionus, very affectionate, great bird. he does something that I was wondering what it might mean. He gets on my shoulder and gets real close to me, making noise, not squacking, and he moves alittle back and forth and up and down.Its like he can't get close enough and it is almost like he is being affectionate. I can do anything with him, doesn't bite, scream, has run of the house, loves to be where we are. He doesn't do this all the time, just sometimes.