to me, one of the prettiest ducks that exist is the Wood Duck
Wood Duck, Identification, All About Birds - Cornell Lab of Ornithology
until this year I had never seen any free flying ones.
this year, several have chosen the ponds at the Topeka Zoological Garden in Topeka KS for a stopping point in their migration and I have posted some of their pictures here but until yesterday my photos were of the "eclipse" phase for the males, not their true beauty. However yesterday, I was teased by a pair - one male and female - swimming just off shore BUT under the extreme shade of some low hanging trees.
Some of these photos show what I was dealing with, plainly visible to the naked eye but extremely dark photos pre PP. others show the effect of some extreme pp (cropping and lighting work).
enjoy (while I go back to the books to see how I could improve the photos without pp)