What gender are my Pekins?

[Money Pit Zoo]

These are my two Pekin ducks, Chick Chick and Rose Petal, from the straight run bin at TSC. They are 16 weeks old tomorrow. They make the same kind of noises so I’m pretty sure I’ve got two of the same gender, but I can’t decide if it is for sure girl quacks. And I don’t know what I’m seeing in the tail feathers either. Anyone have any guesses on if they are boys or girls? Rose Petal is on the left in both pictures.

 

[SilverBirds]

Since pekins don't have gender specific feather patterns the only visual cue would be a male tail curl. I don't think I see a curl but it's still possible you have drakes. Can you post a video of them quacking? That will be the easiest way for us to tell. (videos need to be uploaded to another site such as YouTube then linked here).