I disagree with some of this advice. I absolutely would clip the wings.
SC2's can get spoiled bird syndrome, and disregard "the rules" real easy. This is NOT aggression, this is Too spoiled bird syndrome!!! It is starting. Stop it now, before it gets bad!
My solution to this is simple, and bound to be controversial. You don't punish a bird by putting it back in its cage. That isn't punishment.
If the bird is running around biting feet, you grab a large pillow or a cushion off the couch. Something bigger than the bird. You put it down on the floor, and you make the chase-R, the chase-E... You back his little feathered butt up into a corner, and make him sit there a minute - TRAPPED AND FEELING VULNERABLE - and make him think about the wisdom of what he just did. Let him get a sense of just how much bigger you are than him. Take his little birdie ego down a notch. YOU are not in charge bird. WE ARE! HE DOESN'T GET OFF THE FLOOR TIL HE STEPS UP NICE. NO BITING! IF HE BITES, HE GETS DROPPED TO THE FLOOR AND GOES BACK TO THE CORNER.
Anyone who gets chased, immediately does this. This will no longer be a fun game for him to play...
I guarantee the behavior will stop!
The command I use when doing this one is: "Knock it off!"
If they chase, you don't run. You can't have a bird amputating toes, or chasing people around the room, or dive bombing them.
Dive bombers get clipped. Chasers get chased themselves. They get flight privileges back when those behaviors stop, and not before...
I hope this was a joke, a very bad joke as it was not funny and very unhelpful for cockatoo owners seeking advice.
You do not fight fire with fire. You do not pour gasoline onto fire to put out a fire.
If this was not a joke and was serious advice, I suggest you rethinking your "training" methods. Read up in positive reinforcement training. It works much better than abuse and punishment will ever work on an animal.
There's no gasoline involved here. And you don't positively reinforce negative behaviors. (You "accidentally" train the bird to bite, to scream, to chase, when he gets the "happy- be a good boy and stop biting junior's toes" treatment when misbehaving.) You positively reinforce the good ones. LIKE WHEN THE BIRD STEPS UP NICE AFTER HAVING TO BACK HIS BUTT INTO THE CORNER FOR BITING JUNIOR'S TOES. He gets praised, and then gets a treat and/or scritches. All is forgiven. We don't do stuff like that. THAT is the positive.
Next time he goes to chase, just pick up a pillow, and watch him stop dead in his tracks... little light bulb comes on behind those black eyes. This is how we modify the really bad behaviors.
THIS WAS NOT A JOKE, AND I REHABBED OVER 350 OUT OF CONTROL BITERS FOR THREE DIFFERENT RESCUES IN THE PAST DECADE.
YOU'RE NOT "PUNISHING" THE BIRD. YOU ARE PREVENTING THE BIRD FROM ATTACKING YOU OR ANYONE ELSE, AND LETTING HIM KNOW IN NO UNCERTAIN TERMS THAT THERE ARE BOUNDARIES, AND THAT CERTAIN THINGS WILL NOT BE TOLERATED BY HIS HUMAN FLOCK... It doesn't harm a bird to put him on the floor. It doesn't harm a bird to stop him from biting people. All you are doing is making sure he cannot do that... This isn't punishment. Punishment does not work. I agree 100% with that statement.
With "punishment" the bird doesn't associate the "bad behavior" with your reaction to it. With this HIS BAD BEHAVIOR TRIGGERED AN IMMEDIATE REACTION FROM YOU THAT HE DID NOT LIKE... I was aggressive, that human thing is capable of, and willing to, defend itself. In fact, I'm lucky he/she is nice to me, or I'd probably be TOO STEW right now. Remind me not to piss him/her off!
BUT, If the bird THINKS he is in charge, and makes the rules, HE'S RIGHT!!
If he thinks he can get away with it, he will try it.
If he tries it, and it works, he will not only keep doing it, but each time he gets away with it, you have reinforced it...
If he knows he will not get away with it, and his little feathered butt is liable to be backed into a corner, he will not do it anymore.
It is no longer a fun game.
And SC2's can be the biggest too manipulators and tantrum throwers out there.
IN THE WILD, IF ONE BIRD ATTACKED ANOTHER BIRD, THE OTHER BIRDS IN THE FLOCK WOULD MASS AND DRIVE HIS LITTLE FEATHERED BUTT OFF... THAT IS HOW THEY LEARN.
As I said, this method is controversial, and intelligent minds can disagree. The object isn't to bully the bird. The object is to react to his aggression, and stop it in a way that hurts no one, but leaves a lasting impression on the bird. "NOTE TO SELF: THAT DID NOT GO AS PLANNED! WHAT WAS I THINKING?! THOSE THINGS LOOK SO MUCH BIGGER WHEN YOU ARE STANDING EYE TO EYE ON A TREE BRANCH, BUT ACTUALLY, WHEN YOU LOOK UP AT THEM FROM THE FLOOR THEY ARE MUCH, MUCH BIGGER THAN ME."
In the wild, parrots do not go out and pick fights with things that are much bigger than them. They might try and drive off a predator if they had a nest or flock mates to protect, but they wouldn't seek them out and bully them. This is a "captive bird" phenomenon. AND IT'S BECAUSE "THEY CAN." IF THEY KNOW THEY CAN'T, THEY DON'T.