Hello all. I just 2 months ago rescued a 4 year old male severe macaw, that we renamed Groot. When he first came into my home it seemed as though he was more interested in initiating contact with my boyfriend (who is not a bird person by any means). He has a room to himself and I make a point to come in everyday and spend time with him. It seemed like he and I have been really coming along great in our relationship. He climbs down off of his cage to the floor to tear up cardboard boxes, he will climb up on my lap and preen and allow me to preen him (he is currently going through a molt). Anyway, yesterday I was out of his room opening a toy for my daughter, and my boyfriend went into his room to talk to him. Groot was down on the floor and started biting his shoes. I went in and in and knelt down and he literally linged at my leg and latched onto my calve. Basically attacked me. Anyone have any idea why this occurred? Is it because he was being protective of me or protective of my boyfriend? My boyfriend does very very little with him at all. I am a little confused by it. He is usually a sweetheart to me but occasionally is nippy to my legs and such, nothing unbearable. I feel like he nips at times just to get a reaction. That being said, I haven't stepped him up because the few times I have he rushes my shoulder and I don't completely trust him up there. I know he has been hormonal, and he came on a poor diet, so I have tried transitioning, but have laid off some just to let him adjust to his home environment, as I feel that all the changes may be overwhelming to him. Please if anyone can offer advice on the behavior, please let me know. Thanks!