Kaessa is right
that would be the most ideal
but if u dont have any other poultry other than one male and one female ive seen that work but for the most ideal and for the best outcome go with the 1 male to 2 ducks ratio

but if u dont have any other poultry other than one male and one female ive seen that work but for the most ideal and for the best outcome go with the 1 male to 2 ducks ratio