The motorbike frog is a ground-dwelling tree frog found in Southwest Australia. It gets its name from the male frog's mating call, which sounds like a motorbike riding past and changing gears. Other common names are Moore's frog, the western bell frog, western green and golden bell frog, and western green tree frog.

Back varies from pale brown to dark chocolate with areas of deep green or olive, red colouration in the groin and hind limbs.

Tadpoles

Large, black with deep tail fins.

Mostly light blue-grey in colour. The forehead, crown, chin and upper throat are white. It has a long, slim neck and a pointed grey-black bill. The legs are long and dull yellow in colour. Easily identifiable when seen from below with the dark flight feathers of the wing contrasting with the paler grey plumage.

Males and females are similar. When breeding, the birds have long feathers (nuptial plumes) on the head, neck and back. Young are similar in appearance to non-breeding adults, with little to no white on the face; underparts often have a reddish colour.

Distinctive feature

Its characteristic white face.