Help with biting all of a sudden
My girlfriend and I have had Loki for 3 months now and he used to bite me early on when he was still new to us. Eventually he warmed up to us and stopped biting me, but he was still scared of my girlfriend a bit. Now he's not really scared if her anymore, which is good, but he's also biting me again as well as no longer stepping up onto my hand. We thought maybe he's somewhat scared or feels threatened by me again, but he also hates it when I leave the room. I'll walk towards the hallway and he'll fly across the room just to be on my shoulder or screech when I leave.
We're both first time bird owners so we aren't fully sure what the sudden biting again means, as well as why he is one way with me and another way with her. Especially since he only bites me. Can anyone help with this because we haven't found an answer online?