The thing I would like people to know is that they make the kind of noise that will literally drive you insane if your brain doesn’t adapt to tune it out. It’s loud, high-pitched, and constant.
It’s not about just making phone calls difficult or making it hard to hear what your friends are saying (especially if the parrots decided they hate your friend, which is a whole 'nother parrot problem). It’s so pervasive that it actively changes how your senses perceive your environment.
Years after they both died (at about 20 years old, the female died from getting eggbound and the male died of a broken heart soon after), my brain was still putting parrot noises into the background sounds of my house. I’d be doing my normal daily thing, then stop and be like “Wait, why have I been listening to parrots screeching for the past two hours? They’ve been dead for three years” and my brain would go “Oops, sorry,” and I’d stop hearing it for a while.