I have 3 ducks, one drake Rouen, 1 female Blue Swedish and 1 female Rouen, I added 2 more females (pekin), the male keeps harassing them, doesn't let them eat, bathe or anything. A friend of mine gave me another drake (cayuga) and I separate them thinking that it'll be ok, I put together the Cayuga Drake with the two Pekin Females and he (cayuga drake) is pecking at them, instead of mating with them!!! What's wrong with these two females. I don't know. HELP!