not always the noise
Mostly I don't think it's the noise anyway, just seeing is enough to make some folks complain.
Can't complain about seeing, so they say it is noisy or say it is low.
Some kind of invasion psychology. Or jealousy.
So making the bird quieter might help, but doesn't fix it for the expert whinger.
And oddly sometimes more traffic might help in some situations, because people get used to it and tune out.
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More volts, Igor