We finally realized that the basin was too deep to interest the birds, even if we put rocks in the bottom of the basin, although in this picture clearly somebody, probably a largish canine somebody of the coyote variety, was interested in the water and knocked it over. Since there was no pump, the water in it did not move and we had no desire to breed mosquitoes.
Old Birdbath--Somebody Wanted the Water |
Tower Fountain, Complete With Birds |
Evaporation seemed unlikely since the water levels didn't change much during the hottest part of the summer days. The water level would go down a little during the heat of hot summer days, but most of it seemed to go at night. We knew that coyotes visit the garden from time to time--we've found piles of poop and other evidence of their presence, but it seemed unlikely that they would be here every night.
We were so curious that Cindy gave me a trail camera for Christmas. The camera has a motion sensor and infrared capability, so I set it up in hopes of finding the solution to the mystery, but.... nada, nothing, no varmints. A few curious birds seemed interested in the new shiny thing, and a few California Ground Squirrels visited the fountain for water, but nothing else. We knew that the infrared feature worked, because we used the camera to film a curious neighbor cat who was coming to the door to taunt our cats, but the camera picked up nothing in the back yard at night.
So now it looks like either there is something about the fountain as it is presently configured that makes the water shoot up like that. We'll just have to figure out whether it's calcium deposits that have built up, or the way the rocks are arranged, or what it is that's causing this.
My favorite theory was the Raccoon bacchanalia, but that's not what the evidence showed. It's something of a letdown--maybe, as Pogo says, "we have met the enemy and it is us."