Quack Attack

I'm sitting at my desk at work, and I hear something tapping on the window. Sometimes we get these guys who wipe our windows, and I heard the gardener with the lawn blower, so I figured it was just maintenance. But the tapping continued. I looked over, and it's a duck! Or to be more accurate -- two ducks. When I got closer to the window (our windows are reflective in the daytime, so the ducks can't see in) I could hear them quacking. One of them was just sitting there, while the other was vigorously attacking his reflection in the window (hence the tapping). As I was watching them, a big truck drove by and scared them away.