waterfowl; aquatic bird
A somewhat formal or technical term for birds that live on or near water, such as ducks, geese, and swans. In everyday speech, more specific bird names or 水鳥 (みずどり) are often used.
This lake is suitable for observing waterfowl.
水禽類にはカモやハクチョウが含まれる。
Waterfowl include ducks and swans.