Can anyone answer this question ? If you have six ducks 2 males 4 females ok . The two drakes will argue, out of the four females they fight over just one and will breed the heck out of just that one, ignoring the others . Did you ever wonder why or how they choose just that one female ? They don't have big teats so that's not it . They are all shaped the relatively the same so that's not it . The only thing I could think of is ( she has a Really NICE QUACK!!!!!!! ) Chicken finder says lol have a nice day.