Parrots are very noisy!
Home So you want to own a parrot?

Noise is probably the most common reason that parrot owners choose to dispose of their parrot. It is an instinctive defense behaviour of all birds to remain relatively silent in unfamiliar situations so it is not uncommon for a parrot to seem quite at the pet store and for the first 2 or 3 weeks in a new home. However, once it begins to feel comfortable in it's new surroundings the vocalizations will begin to increase in both frequency and volume. In the wild, a parrot's vocalizations must carry across many miles of rainforest or other terrain, so it is by necessity very loud. Your pet parrot will commonly celebrate the beginning and the end of each day with a short period of "screaming", but may at times and for reasons of it's own choosing, scream for much longer periods. This is just your parrot being a parrot. Sellers frequently "forget" to mention this to the prospective buyer and it is not uncommon that weeks later the new owners finds themselves in trouble with angry family members, apartment managers, neighbors, or even the law. Some of the most frantic calls are from people who must dispose of their pet immediately or face eviction or legal action. The point of all of this is that you need to know what to expect BEFORE you acquire that parrot. Below, we have provided you with samples of the vocalizations of a small, a medium, and a large bird to give you at least a minimal idea of what to expect.
This is a sample of the noise made by a macaw, the largest of the pet parrots. However, due to the limitations of my recording equipment even with your speakers turned all the way up, 100% volume doesn't do justice to the loudness of this bird. What you will hear is about equivalent to hearing the call from an adjacent room. If you can imagine twice the volume you would be pretty close to what you would hear in the same room.

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This is a sample of the vocalizations of a medium sized parrot such as the Amazon shown at right. A 100% volume setting should be representative of the noise level in the same room as the bird. A volume setting of about 50% should be simular to hearing the noise from an adjacent room. A setting of 25% is about equivalent to hearing it from an adjacent room with the door closed.

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This sample is the vocalizations of one of the smaller parrots, in this case the Quaker Parrot at right. Using the same volume recommendations as above, this is an excellent demonstration that smaller does not necessarily mean quieter. If you think this guy is noisy, wait until you hear a Sun Conure at full stride!

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The point of this section is to provide a little insight into how noisy a pet parrot can be. As you can tell from the sample sound tracks, when you bring a parrot into your home everyone there (and maybe in the neighborhood) is going to know it. When you acquire a parrot, it's presense has to be accepted by everyone in the home. Many people have done so without the full knowledge and consent of everyone in the home resulting in a great deal of friction, discord, and ultimately another bird in a rescue. In order to prevent domestic problems it is imperative that you and everyone in your home know and accept, in advance, the noise levels that you are likely to encounter and will have to live with for the next 20 - 80 years. 
So you want to own a parrot?