The Waterslaggers are popular song canaries in Europe and, more recently, in the U.S. This breed originates in Belgium and are usually light yellow with some dark marks (ticks). They are the closes relative to the German Roller Canary.
They produce a soft to medium-loud song that is soft and bubbly akin to the sound of rolling water with some notes sounding like water dripping into a barrel.
Of all song canaries, they produce the lowest and highest range of notes and without any harsh chopping sounds. They sing with their beak closed, except for opening their beaks for some pronounced sounds.