did you try the cut out of a hawk taped to the window? that sounds like a cool trick...or put one of those fake owls in a couple of the windows...i bet they stay away...
We've got a bird (sparrow, I think) crapping all over our cars in our driveway. I mean ALL over. And it's one bird. It's amazing...I don't know what this !@#$er's eating, but there's about a half-pound of **** coming out of this four-ounce bird every morning.
So anyhow, we got sick of it, so I went out and got a fake hawk and put it on top of the car one night, hoping MAYBE it would work.
Next morning, hawk's covered with bird ****.
We just park in the street now.