The Screaming Companion Parrot

Worth a read:

Parrot Screaming: How to make it stop so you can keep your sanity - Birds And Beaks

Those are great tools!

I find that connecting you're being outside also helps, but also telling the Parrot the you are going out. I use a prep statement: I am going outside and I will be back. As this process sets in with the Parrot, I will add timing to it.

First, like in the article step out of sight to get the in-house, but out of the room part set in place. Next, I will step-out side, but place myself so the Parrot can see me though the window. I will add in and out of the windows view and also time between as a means of building-up a comfort with and a difference between being outside and being in another room.

Communication!!! Let you Parrot know where you are! I'm in the washroom, I'm in the bedroom, etc... This defines a line of communication and that you are around.

Yes, Parrots are a flock bird, but!!! Different Parrot species are very strong Flock Birds example: Cockatoos. Whereas, Amazons are more social groups and to a leaser degree large flock birds.

Parrots that have a family that is communication with them are more comfortable when individuals are not insight and screaming is replaced by quieter communications calls.

In also learned the communication helps ALOT dealing with their separation anxiety and locating calls. I figured out years ago just how smart these critters are. When leaving the room I'll give them the info on what to expect of me. A "be right back" means just that... and I tell them before I step out of the room. They even understand that "taking a nap" means Im not coming right back in the room. They also understand when I tell them "daddys going bye bye" that its time to hop in the cage and I don't get a bunch of screams when walking out the door. I do however get one hella loud greeting when I drive up in the driveway... which I respond to them with as much exuberance as they greet me with. Im sure the neighbors think I'm looney but WTH. Usually every evening both my critters get together on top of a cage and cut loose with a chorus to let the world know where they are which is no big deal to me.. but if I want to settle them down all I have to do is sing to them.. usually "Row your boat" does the trick.. complete with some head bobbing... and they will start head bobbing right along with me...
so we actually are having a "flock" sing along at that point.
I know some folks get all worked up and want to cover the bird or maybe put them in a separate room... heck even spray them with water to get them to "shut up"... but that's really the wrong way go on SO many levels. Just a lil love, patience, and communication wiith these critters solves most problems.