Blue Crested Swedish Duck
I have only seen two of these Swedish ducks, apparently someone dumped them, this is a domestic breed. The crest can be found on any species of duck, it is due to a skull deformity.
Blue Crested Swedish Duck (Anas platyrhynchos domestica)
Anas platyrhynchos domesticablue swedish duckcrestedblack crested swedish duckblue crested swedish duckwhite rock lakedallas texassunset baygreen watercrested ducks