My mother brings home a White Crested Umbrella Cockatoo from animal control to rehab it so it can be adopted, she does that kind of stuff.
SOB squacks and shrieks to high hell, not just once or twice, but over and over and over for minutes at a time. I just go over and sharply rap the side of the cage and yell "shut up!" Scares the dickens out of it, but works like a charm. Damned thing hasn't done it again.
My mother bred these and a dozen other species of bird when I was growing up, had a couple hundred damned birds in the house at one time. I have no freaking tolerance for these infernal beasts.
If they just chatter and squeak from time to time, no problem. But the shrieking over and over and over for 5 continuous minutes - SHUT THE F-CK UP!