I was watching a woman with clicker training, for birds. And from what she was doing she taught the bird positive reinforcement not to bite the husband (whom the bird bit often) and the bird would step up for him in a little under a week. As for my cat, bengals, are hybridized cats, their wild relative, was a chinese type of wild cat whose main source of food was birds. She's very huntmode alot, sometimes just the movement of a hand makes her that way. I've seen her leap up 6 feet straight up without a real running start and catch a fly. With her, until she gets older and mellows out, I wouldn't even consider even a big macaw. Here is the link for that clicker training.