A couple of years ago I took my family out one morning to the Old Fort Boise to see the Spring migration of tens of thousands of Snow Geese. The Snow Geese weren't cooperating that morning, so we drove around on the dirt roads in the area to see what other birds and wildlife we could see.
There were two large trees overhanging the road ahead of us chuck-full of Cedar Waxwings. Hoping to pick out some possible Bohemian Waxwings, I pulled up underneath of the tree and opened my sunroof for a better view. Big mistake! Suddenly it started to rain, but it wasn't water. Some of the grossest bird droppings I had ever seen fell into our hair and all over, inside and out, of the family minivan. My wife was not well pleased.