Duck amuck

Up ahead was a big yellow truck
That had come to a stop for a duck,
So I stopped my car, too,
And then out of the blue
Came a WHACK! Duck hit me, just my luck.

The web-footed goof flew right into my front towbar. There was a loud thud, and the car shook with the impact. But when I backed up a few feet, expecting to see a duck carcass, he picked himself up and wobbled away. He was quacking, and I was quaking.