water ouzel, dipper(noun)

small stocky diving bird without webbed feet; frequents fast-flowing streams and feeds along the bottom

Water ouzel(u)

any one of several species of small insessorial birds of the genus Cinclus (or Hydrobates), especially the European water ousel (C. aquaticus), and the American water ousel (C. Mexicanus). These birds live about the water, and are in the habit of walking on the bottom of streams beneath the water in search of food