Thank-you for your question.
Parrots by nature, squawk, screech, whistle, and make any other loud noise that they can; that is one way in which they communicate with their flock members. In captivity, they consider humans to be flock members, and so they do all these things frequently for attention. In answer to your question, she is shrieking because that is how birds communicate.
I have lived and worked with parrots for over 25 yrs, and I have never known a quiet one unless it was terribly ill.
Here is a website for more information: http://www.avianweb.com/noisyparrots.html.
If she is getting yelled 'at', she may get scared. It is very hard to undo this fear unless you are totally committed to her comfort, because greys are supersensitive when it comes to having their feelings hurt. Also, if the dogs start to bark, she may start 'barking' too, or shrieking just as loud to join in with the 'flock'. This is a natural reaction.
Here is a behavior site online that might be able to help you:[email protected]
If you are in over your head with this bird please let us know so that we can find other ways to help you.
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