Hi @Chocy_duck
Welcome to BYC!!
There are so many helpful people on this site. They have helped me a lot with my new ducks.
I have a drake in my flock (along with 4 females) and he does just fine with his girls. As long as he isn’t ripping out all their feathers, or being overly aggressive, he should be just fine (and very happy) with all of the girly ducks.