Can small mallards and the bigger breeds live together just fine?

[SassyKat6181]

My Mallards are a few weeks older than the Pekins and Khaki Campbells and the Mallards used to bully the others because they were bigger for a little while. The ducks are now about 5 months old and everyone gets along well. Three of the Mallards are male and the rest of the ducks are female, so maybe they keep everyone in line.

 

[GrannyCarol]

I have a little Mallard drake with my larger ducks. He is quick and nimble and handles himself just fine (though I don't have a pond to fight over). If the larger drakes approach, he flies away - they can't fly. If he's ornery he runs in and pokes them and runs off. That said, most of the time my larger drakes are in their own pen, I have too many boys for the number of girls that I have and they do breed them and leave the necks raw and chase each other around. I'd separate them and see if your small ducks will bond with the Cayugas.