Which term refers to water birds, especially those that swim?

The correct term for water birds, particularly those that are adapted to swim, is "Waterfowl." This category typically includes ducks, geese, and swans, all of which are known for their aquatic habits and physiological adaptations that enable them to thrive in water environments. Waterfowl are distinguished by their webbed feet, which assist in swimming, and their ability to dive or dabble for food.

Other terms, while they refer to groups of birds, do not specifically encompass the swimming behavior associated with waterfowl. Gamebirds primarily refer to terrestrial birds that are often hunted, such as quail and pheasants. Shorebirds are those that inhabit coastal regions and often feed along shorelines; they are typically characterized by long legs and beaks, making them more suited to wading than swimming. Upland birds are found in drier habitats and do not include waterfowl, focusing instead on birds like grouse and partridges that live in open fields or forests. Thus, Waterfowl aptly captures the essence of birds that swim in water.