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> Sounds and Thuds [that scare birds away]

In "Glass Antenna Turns windows into 5G Base Stations" https://news.ycombinator.com/item?id=41592848 or a post linked thereunder, I mentioned ancient stone lingams on stone pedestals which apparently scare birds away from temples when they're turned.

/? praveen mohan lingam: https://www.youtube.com/results?search_query=praveen+mohan+l...

Are some ancient stone lingams also piezoelectric voice transducer transmitters, given water over copper or gold between the lingam and pedestal and given the original shape of the stones? Also, stories of crystals mounted on pyramids and towers.

Could rotating large stones against stone scare birds away from runways?




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