I have four 22 week old female Welsh Harlequins and one 17 week old Pekin Drake. He only breeds them when they are in the pool, which I appreciate since he is a little bigger than the girls. He seems to be pretty gentle with his breeding. The funny thing that I am wondering about is after the breeding. After the act is done he puffs up all his feathers on his head and neck, stretches his neck out long and low in the water and does a lap around their pool as fast as we can. We have taken to calling it his Victory Lap. It's cracks me up every time I see it. I hear Wayne saying "He shoots, He SCORES!" LOL! If this a normal behavior or is it just one more way that our Ferd is special? He is the bumblingest, tripping over himself, clueless duck of the bunch. The girls are all graceful and he is a big galoot. Of course that makes him the family favorite, you could just watch him being a dork all day long with a smile on your face.
Haven't kept ducks, only geese, but the ganders did the same thing. And they were vocal. So, so vocal. You'd always know not only when they were mating, but pivotal moment too, as it were, and then the aftermath. And then, the victory lap, lol, aptly named. Many of my roosters did a similar thing, they'd slap their wings noisily and crow after mating. Some felt the need to jump on fenceposts or shed roofs to get better range. Best wishes.