I had been seeing a bit of a curl, but as he feathered out more it seemed to disappear. The other drakes aren't really showing much curl either, and I had them sexed. His size relative to the other ducks leads me to believe male also,he is a month younger but already as big or bigger than all of my females. but thanks for the hope. I just got 6 new females yesterday, so it's ok if he really is a he. 
