WordNet: aquatic bird

wading and swimming and diving birds of either fresh or salt water

• hypernym bird

• hyponym water bird, waterbird, waterfowl

• hyponym swan

• hyponym wader, wading bird

• hyponym gallinule, marsh hen, swamphen, water hen

• hyponym sea bird, seabird, seafowl

aquatic bird

• (suomi) vesilintu (synonyymi)