Ain't that the truth about predators! Lost my best drake this spring. Had hoped to get more eggs to hatch out of the first round of the incubator because those would have been his. They wintered really well too to my surprise and amazement. They are a hardy bunch those ducks are!
I've never lost a duck to a predator. One day we picked up some ducks from a guy and once they were all loaded up we saw a duck hen laying in a puddle. The poor Cayuga hen was gang raped by 5 drakes. And one was a huge Muscovy.