I’m not sure about the two white ducks(maybe look at Fawn and White Indian Runners) but the darker one doesn’t seem to be a Rouen. I have three and Rouen ducklings have two prominent stripes on their face. Also, drakes normally “bully” hens if the ratio is out of balance. I think the white ducks...
I’m still new to Rouen's and am trying to figure out the genders to mine as well. I definitely could be wrong, but I think you may have all drakes! Hens will typically have more prominent coloring on their back feathers and brown/dark orange bills. They all also seem to have shorter and thicker...
