We got our ducks from Tractor Supply. They are Pekins and we watched a video on how to sex ducks on the Metzer Farms website. My husband checked and they seem to be females. I have been reading old posts and have seen some of you mention that the males are quieter. I have noticed that one that we call Ming Ming is much bolder and quieter, stands taller and is slightly bigger. Daisy cowers behind Ming Ming and cries when picked up. Ming Ming is the one who will come to us first. They are only three weeks old, could personality determine the gender?