Swanna's all like "I'mma swan, bitch!"
but waitaminute, is that a feather down bra? Gamefreak, you know I don't want to think about Pokemon having breasts. Jynx, Nidoqueen, and Gorebyss already proved that. I guess it's really not very prominent, and not that big a deal, but still.
Ducklett and Swanna remind me of Wingull and Pelliper, in that they have the same typings, and each work in two kinds of birds. In real life, ducks don't grow up to be swans. But that would be awesome, and it works a lot better than a duck evolving into a bigger duck. So it turns into a sassy swan instead.
Really, it's the implied attitude that makes me like Swanna. girl looks like she won the Ms. Sassy Assy competition of 2011.