none on mine. The little rubber filler piece does flip torwards the edge of the windshield though. I know this because I had to clean bird crap out of it... Leave it to a bird to be so freaking precise as to where it takes a dump.
It utterly amazes me. It's either the absolute precision to get it into an area that isn't easily cleanable (like a flat body panel or window where you can just wipe it off with some cleaner or wipe and shine), OR if their ability to get it right on the edge of some body part, where if they just waited a millisecond, it'd have hit the ground.