My canvasback story was.   I had hiked into my favorite intimate duck hunting spot with a bag of decoys.  I don't have a dog, so have my float tube as well.  I float tube across, and get set up in the dark.  The fog keeps drifting through.  The first mallard of the day comes in. Boom, my gun jams and no more hunting for the day.  I'm sitting there trying to figure out what is happening, and I hear a splash.  I look up and at about 30 feet, here sits the ONLY canvasback I have seen in this area.  Restraint kept me from throwing the gun at the duck.  I went out in the float tube and retrieved my mallard and packed up and came home.