Now, I am not saying this is not a nasty old lady (I had one next door, myself) but everybody who has a parrot knows that they will scream and that you certainly do NOT have to train them to do it. But then, everybody who has a parrot also knows that if you play music, TV or whatever loud, the parrot will scream louder...
https://www.thesun.co.uk/news/11053767/ ... eighbours/