A good many ducks quack, but not all ducks quack. However, a good old-fashioned quack will attract most ducks—mallards and non-mallards alike. But the ability to sound like different types or species ...

The gadwall has no glam. Its nickname, the “gray duck,” is the definition of dull. But a close look at the subtly hued drake shows that he’s every bit as handsome—in an understated way—as any ...