No, not the Alfred Hitchcock movie. Rather, an invasion of Grackles in Kerrville, Texas.


One time I left my car in the San Antonio airport, cleverly parked under a tree for shade. Or so I thought. I turns out that was a favorite tree for Grackles. When I got back from my trip, I literally could not see out my windshield.
Beware of the Grackles!
P.S. Evan commented below about the noisiness of the Grackles. Yes, indeed. They are obnoxiously loud. You can hear them on this video clip:
[YouTube:http://www.youtube.com/watch?v=HqsPfGEIib4]