I don't believe domestic ducks to be monogamous. Nor do they stick to their own breed. There are a few hatcheries that do sex, but you need a minimum of 10 ducks. You may be able to get someone to go in on an order with you. We ordered 10 ducks intending to keep only a few and ended up keeping all 10 plus the extra drake they sent and have ended up breeding them. LOL they are just as contagious as chickens! Good luck with your decisions!
