Nice one Valli. You shd have mentioned its gender. Anyways, for the public - that's a male (it has a black beak), not a female. It is obviously imitating some member of the house. Females can be worse and we know it (it can put on a pretence..).
I just came across this very funny, hilarious video of an angry cockatooCouldn't help laughing! Posting here so that others can also get a good laugh!
YouTube - bird throws a fit
Kind regards