I saw it happen today. I was headed home from running errands and
passed a housing development under construction. I saw something up in
the air and thought it was a bird because it was going up and down and
around, but as I got closer, I realized that it was a plastic bag. It
was floating around 50-100 off the ground. I flew a couple hundred
yards, across the road and then into a tree where it got snagged.
It happens.