I have two WH that are keeping me guessing on gender

[jeaucamom]

So based on my snatch-n-quack....I think these two are males. These ducklings were hatched 4/25 so they will be 6 weeks on Monday. Although... several of my very obvious females are still raspy, but they are just now getting their voices. And their bills are just now starting to change. I can just see a little yellow developing around Casanova's edges of his bill. And the girl's are already very dark gray. I do have one very light female with a light colored bill. **** Sigh **** I know ***** I know **** but I really wanted to breed from these. I just can't stand the waiting to see what they will wind up looking like.. AHHHHHH!