Bird Poop Art Car???

I have come across a type of art car that is under the natural-accidental category, meaning that the car owner had little or nothing to do with the creation of the art itself. It allowed for a more "natural" process to occur, just like the earthquake art car.
These cars I think were created by a group of artist bird colony, inspired by the works of Jackson Pollock. Their canvas of choice is a car parked underneath a nice perch. The medium, well you know, fresh poop. The result might be stunning but not as valued by the car owner, because unlike a Jackson Pollock painting the worth of this "art car" goes down ever after the birds pass away. Whether or not this form of art will take off, only time will tell.

An actual Jackson Pollock Painting