Male ducks chase and attack female ducks as a part of a dominance ritual which occurs before mating. Basically, this is duck foreplay. The male will generally be nicer to the female if she lies down in front of him and lets him literally walk all over her.
It depends on the kind of duck that it is and if it is male or female. Male ducks are more aggressive and attack more often. One of my ducks is male and will attack all other ducks its sees but this is just his personality. All ducks, like humans, have their own characteristics.
In English there are no masculine or feminine forms. English uses gender specific nouns for male or female. The noun duck is a common gender noun, a word for a male or a female. The noun for a female duck is duck or hen. The noun for a male duck is drake.