
AKA Growling Grass Frog, Warty Swamp Frog and Green Frog is a species of ground dwelling tree frog native to South eastern Australia - it was introduced to New Zealand in the late 1860s. New Zealand originally had seven species of native frog.
The four remaining species are:
Hochstetter's Frog
Archey's Frog
Hamilton's Frog
Maud Island Frog
The Southern Bell Frog call is a three part moaning "Craw-ork ar-ar", rising and then falling in tone. (described as the sound of a duck or goose being strangled).