I'm in your boat too....with same birth time with my WH. Do know that my ducks were from Holderread so they were breed to standards....so am already seeing 2-3 males with curling tail feathers. And darker bills are the ducks. But like others have said, let's wait for the teen feather molt and see where the chips lie.Thank you all for your responses! They are approximately 2 months and 3 weeks old. I'll be patient!