Good colors on the rubber ducky, but the lighting on the real duck seems to be a bit harsh. It looks to me like it might have been an overcast day (not a lot you can do about that!) but we lose a lot of the detail in the mallard.
Great capture of a moment combining real and artificial, good composition. With advanced editing, I think that you could dodge the mallard (at least to make the eye more visible), or use layers to lighten it. Love it anyways because of the moment.
i like the way you put the "ducky" on the intersection of the "thirds". however, in my perspective, it is better to place the real duck just a little bit to the right to create a more stable composition. it is really nice.