From the Wisconsin State Journal:
Between five and 10 large male turkeys, or toms — apparently a little giddy with the onset of turkey breeding season — have been bullying postal workers as they make their rounds, pecking at them and even trying to rough them up with the sharp spurs on their legs. One of the birds launched itself through the open door of a mail truck and scratched the driver._

In self-defense, postal workers have armed themselves—with water pistols. That, you’ll be shocked to learn, isn’t working out so well.