The duck proved impossible to build as depicted. The longest dowels that came with the set were not long enough to go through the three metal pieces and have fiber washers attached at either end. I did manage a work-around, though. By reversing the "wings", I was able to use one of the longest dowel rod to connect the two pieces to the body.
The other problem was the beak. The plans show a short beak, but the set comes with only two different lengths of dowel rods -- and both far too long to serve. I could have cut a dowel to length, but the purpose of this exercise is to see if the toys shown can be built with the pieces supplied. In this case, not quite. (The issue of very short dowel rods is one that will crop up again in this series.)