Gadwalls quack, just not as loud and annoying as hen mallards.Like I said Ducks respond to Ducks, they make sounds ranging from whistles, cooing, yodels and grunts, but all ducks to include geese & swans will respond to the hen mallards quack, and further more the Hen mallard is the only duck that quacks.............
Yes, but it is a lot higher-pitched than a hen Mallards quack, but only the hen quacks !Gadwalls quack, just not as loud and annoying as hen mallards.