Why do bird always find away to S@!T!! on your car and u just wash it?

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It makes me mad cause every time i take my time and clean my car the way it should be complete detailing inside and out spent about two hours getting my vehicle spotless...i don't care if it parked in the drive way at home or if i'm in a open parking lot at the store i always end up with a big splat of bird s@!t somewhere on my car....I'm starting to think it's just me...Does anyone else have that problem? If so please share..