How to handle a aggressive large parrot this one a Bare Eyed cockatoo

A video on how to teach a aggressive bird and what to use to safety teach them to step up on to you for the first time, pretty much using a stick, or perch. He a male Bare Eyed Cockatoo named Frankie. He was sold around 4 times to different owners as none of them could handle him without getting severely attacked and he was kept in cage for years, so had a bad case of cage aggression. He is not clipped and don't need to clip him to train him as it does not make it easier to train a bird despite what others claim. If anything can make a bird depress and cause other behavior issues. Only clip wing if bird is aggressive to a female bird to resolve fighting, so female bird can get away faster, or medical issues.

He was very aggressive at first, but using stick for him to step up, it keep a safe distance from me to him, just in case he decides to attack and to first get him away from his old cage at store, so I can train him without cage aggression, as it get him away from his safe spot. Now he step up on command and even flight training him at the same time and he starting to come when whistle at, or he see me put arm out and he jump over now. Will show more stuff as I train him other tricks and work out other behavior issues.