My dad was always into warfare with the neighborhood birds who, for some reason, loved shitting on his new car and on our house sidewalk. I remember, every time one hit our windshield, dad would laugh and make a mark in a little notebook he carried in his front shirt pocket. Then when he cleaned off the bird poop with the hose, he's also clean our windows and door glass really clean an set little birdseed goodies so they could see them only he'd place them INSIDE the house.