Litoria ewingii

Whistling Tree Frog

The Whistling Tree Frog, also known as the Brown Tree Frog, is an introduced species in New Zealand. It was first released in Greymouth in 1870's and is now widespread through much of the South Island, Stewart Island, and parts of the North Island. This is a small frog, usually around 30–50 mm long, with a brown to grey-brown body, a dark stripe along the side of the head, and toe pads that help it climb. It is often heard before it is seen, with a high-pitched, cricket-like call.