Hooked Mallard, the Hazards of Monofilament Fish Line

Mallard, apparently hooked on some monofilament. This mallard has apparently ingested a fish line, probably with a hook at the other end. It's possible that he went after someone's bait but equally likely that some shiny fishing lure or fake worm remained on the river bottom, tempting this poor Mallard into what will probably be a death sentence, if it is not removed. Ironically, I did not notice the monofilament until I looked at the picture on the computer some days later.