What happens when a 747 collides with a mallard duck? That’s one of the puzzles in the book Professor Povey’s Puzzling Problems. I have not yet read the book, but the promotional video (which you see here) is possibly perfect:
Professor Povey practices from a perch, and teaches tutorials, at Oxford University. Fluid dynamics is his game of choice.
BONUS: What happens when a mallard duck collides at a slower, but still potent, speed. See it re-enacted as an opera, in London, on August 8 and 9.