If your ducks are that smart is like to see them go against my dogs
Trust me, your chickens are not two 200 lbs pigs that destroyed your garden multiple times and the only way to keep them in so they don't go to your neighbors pecan orchard is little short of making giant u nails to staple penals to the ground so they can't lift it up, you have no idea how angel like chickens look compared to these two.
Oh, my neighbors had pigs.... I know.

Just ribbin ya... But really, calls are not for eating!!