TherryChicken, why would you even let your drake be in the same area as your ducklings if he is acting aggressive? The ducklings can't protect themselves and the mama's won't be able to protect them from an aggressive drake.
I'm thinking you may need to keep them separate for at least 3 weeks usually by then the ducklings can keep away from the drake. So these 2 ducks that are sitting are your only females? Drakes can really be pains in the butt, I have to put up a dog xpen to keep my one drake away from the broody's when they come outside to eat and bathe. I call it jail time.
Might be a good idea to sell this drake, I've never seen my drakes actually be aggressive to any of our ducklings we've had but I don't give them the chance either, once they are around 3 weeks old they are just part of the flock and pretty much ignored till mating age.
Where are you located? there are quite a few here that have Scovys. I know Leary Cow breeds then to sell and there are others too.
