I am wondering if I am able to tell the sex of an Muscovy duckling by voice. They are around 7 weeks I believe. The white one makes a loud chirp sound more then my other one. It also makes the cute cooing sound. It also a little bitter then the other one. I am going to wait a week before I post pictures of them. The other one makes more cooing sounds. So I wonder people can tell the gender of muscovies at this young of age.