I have 3 male runner ducks, 75% runners actually, the mothers were runners/.khakis. I am new to ducks, so I am not sure how this works but they are quite nice and beautiful. We have only a few girls, so one male is enough and the rest needs to go. Because their dad is white, all of the 3 have some white on them or are lighter in color. They move upright 90% of the time. They are about 8 months old now. If you have a nice home for one or all, please let me know.