The duck is a type of bird native to the planet Earth.
Ducks were among the animals brought by the Bringloidi when they were evacuated from their planet by the USS Enterprise-D in 2365. (TNG: "Up The Long Ladder")
In 2372, Captain Kathryn Janeway likened the constant, minor attacks by Kazon raiders on the USS Voyager to being "pecked to death by ducks". (VOY: "Basics, Part I")