Okay everyone I recently thought my two black and white muscovy ducks were male and my white duck is a female. So imagine my surprise when I came out and saw my one black and white duck fighting and holding down my other black and white duck it appeared like they were copulating, he help the other one down quite a few long seconds. Aside from vent sexing these two, is there another way? Here are pics of the ducks in question and the white female.
The duck in the background is the one that was on top of the other black and white one in the foreground and of course my female is the all white one. Sorry this may not be a good picture I have a couple more.
The next one and last one is a picture of the transgressor
Drakes do this to each other hold the other one down it's dominance the transgressor is def drake. Best way other than vent sexing is size drakes are huge compared to ducks and they have a rather long cork screw male part that you can not miss if your looking.