Well at first it was his this is as close as I can get so I'm biting it instead of you, then it became sorta of a game for him. He also loved to attack sisters coat sleeve when she got home for the day. If he was in a really pissy mood he'd hit it hard and really try to bite and pinch, if he wasn't he'd just sorta peck at it and mostly rub his head and beak on her arm
They all have their homicidal triggers, and yes we both got flying attacks when he really got triggered bad, but they also tend to turn these things into games once they decide they trust you but must keep up appearances. Dobby has been trying to get sister to let him feed her, scritch his head, and finger wrestle with her lately.
I think the hormones are kicking in a bit too and she's his chosen one, though he was very happy to see me last night when I came back in after thawing the frozen spot in our water pipe last night. He was on sister but he kept looking at me and whistling and talking, it was pretty cute.