I used to get some sap every now and then when I parked under the big tree at home; not sure what kind of tree it was though Nothing of that nature, though! Wow. Maybe he just gave up on it, and that is why it is sitting there.
Nowadays, I just get dirty squirrel tracks up my hood and windshield. QUITE annoying when it happens right after I wash the car!
Last year I occasionally got cat tracks, but I kind of trained the vagrant cat to jump onto the car next to mine instead He didn't like my car after I waxed it!

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Dan
2005 E320 CDI - 246k
1987 300SDL TD05-16g, Herlevi pump, Elbe manifold, 2.47 LSD - 213k
Past: 1987 300D - 264k