You think I’m nuts, right? In fact your parrot is screaming right now. A normal serenade, the sort of noises parrots make in the jungle is perfectly acceptable and should be accepted. Not everything is screaming, some noises are natural behavior.
Screaming is a learned, not a natural behavior. At least, the sort of screaming that makes us the most crazy and that can be managed. Screaming is something that a bird learns to do in order to control its environment. Want attention? All you have to do is scream. So screaming is a frequent, prolonged, repetitive behavior.
Don’t want your parrot to learn to scream? Start by only responding to sounds your parrots make that you do not mind so much. All your parrot really wants to do is interact with his environment, so give him a whistle or sound you will answer or appear when he makes. Try to make sure that raucous noises are never followed by attention or treats. Be clear with how to get rewarded. You parrot and your ears will appreciate it!