- Colour:Brown or slate back with irregular yellow patches. Males have large limbs but show no distinguishing sexual features.
- Tadpoles: Densely mottled with black and gold. Have a red or gold vertebral stripe and curved lateral line.
- Distinctive feature: Irregular patches of dull yellow or grey.
- Size: Males 3.3 – 6.6cm. Females 4.6 – 6.3cm.
- Call: A long and rising slow moan. Males usually call from the breeding burrow.
- Diet: Mostly invertebrates
- Movement:.Travel large distance to breeding sites and are often seen on roads following autumn rain
- Breeding: Clutches of 80 – 500 eggs are laid in a burrow dug at an angle to the horizontal land surface. Larvae hatch and remain in the foamy egg mass until the burrow is flooded. Tadpoles feed for several months. Metamorphosis is usually in September or October.
What to Observe
- The appearance of tadpoles
ClimateWatch Science Advisor
- We expect moaning frogs to start calling and breeding later in the year as a due to later autumn rains in the South west of Australia.
- They may also start appearing in new areas as warmer temperatures enable them to live in environments that were previously too cold for them.
When To Look
March - August. Males call in response to declining temperature. Large choruses are most common for a month or so after the first rains in autumn in areas that flood later in winter.
Where To Look
- South West Australia
- Coastal and near coastal districts from Geraldton south and east to Cape Arid. Inland to Marchagee, Corrigin, Jerramungup and Gobson Soak. Also found on Rottnest Island and Bald Island.
- Look and listen in swamps with sandy soil. Often calls from suburban gardens
The map below displays the accumulated observations of these species as reported by ClimateWatch observers, together with the layer showing how the range of the species might change between now and 2085, with orange areas indicating where the species might disappear, and green areas where the species range might expand.
Tyler, M. J. & Doughty P. 2009 Field Guide to Frogs of Western Australia Western Australian Museum
Bush, B, Maryan, B, Browne-Cooper, R and Robinson, D 2007 Reptiles and Frogs in the Bush: Southwestern Australia University of Western Australia
This frog can be distinguished from other Heleioporus species by its size, call and lack of nuptial spines.
Did You Know?
Male moaning frogs don’t have the nuptial spines found on the first or second fingers of other Heleioporus species.
Named after Edward John Eyre who with his Aboriginal Guide was the first white person to walk across the Nullarbor Plain in 1841.
Moaning Frogs are common in and around Perth and are frequently heard calling in gardens adjacent to wetlands.
Moaning Frog call recording is by Dale Stewart, University of Western Australia
Listen to the Call