PVC rocking fountain deer deterrent

This attractive fountain is called a "shishi odoshi", known in Japan as a deer scarer and to sushi restaurants around the world as a bamboo rocking fountain.

I would be concerned about how the noise signature and interval stay constant depending on the water pressure. It's also got the obvious problem of freezing in the winter.

It would be easy to fabricate these from PVC pipe. This application might work if 3 or 4 of these units were hooked up so that the noise was staggered and each one created a slightly different clang. A possible solution for someone with no electricity and a nearby source of running water that only needs protection during the growing season.