Ducks don’t have to be the same Quacking, swimming, eating, mating birds. If the Makers can get the Chinese workers to imagine a bit, and if the buyers are suckers for cute things, then you can make Ducks that are Tennis players or Station Masters or even Pirates. The following picture is the proof:
It is amazing to see how much creativity goes into such little things, by paying 0.5 cents to a Chinese factory worker for a toy that might cost 5 cents to manufacture and gets sold for 97 cents in the US.
PS: 0.5 and 5 cents are not actual numbers, They are mere exaggeration. 97 cents is naked truth though.