Keeping Pidgeons away from pool/spa spillway

[swamprat69]

When I first moved to Las Vegas and purchased a house with a pool, I had pidgeons lined up on my roof peaks waiting to get a drink from my pool /spa spillway. I had droppings by the pool and also coming off my roof onto my patio when it rained. Tried a flagstone bridge over the spillway, but that did not eliminate the problem. Then I went to a "party" store and purchased some silver party streamers. I placed these along the raised portion of the spa/pool transition and anchored them with small pieces of flagstone. Pidgeons no longer drink from the pool/spa and no longer sit on my roof waiting to get a drink. They must have moved on to easier pickings to drink. See attached photo.

[Teapot]

Pigeon poop is concentrated phosphate, might be time to test the water and possibly treat to lower phosphates.