Litoria ewingii
In 3 days ~40% in a week ~70%
The southern brown tree frog (Rawlinsonia ewingii), also known as the brown tree frog, whistling tree frog, or Ewing's tree frog, is a species of tree frog native to Australia: most of southern Victoria, eastern South Australia, southern New South Wales from about Ulladulla—although the species is reported to occur further north—and throughout Tasmania, including the Bass Strait Islands, in which state it is the most frequently encountered frog. It has been introduced to New Zealand, where it can be locally abundant.
The southern brown tree frog was described in 1841 by French naturalists André Duméril and Gabriel Bibron. R. ewingi is one of the classic examples of speciation by reinforcement. Future research into congener hybridisation and gene flow may find such occurring, and may find countervailing reinforcement mechanisms at work.
This species reaches 45 millimetres (1.8 in) in length. It is pale to dark brown on the dorsal surface, with a broad darker patch starting at the eyes and covering the majority of the back, although pure green and green striped colour morphs are also common. A dark band starting at the nostril runs across...
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grampians National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Cradle Mountain-Lake St Clair National Park | 🇦🇺 Australia | |
| 4 | Freycinet National Park | 🇦🇺 Australia | |
| 5 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 6 | Phillip Island Nature Park | 🇦🇺 Australia | |
| 7 | Rakiura National Park | 🇳🇿 New Zealand | |
| 8 | Fiordland National Park | 🇳🇿 New Zealand | |
| 9 | Arthur's Pass National Park | 🇳🇿 New Zealand |
Possible
About 20% of wildlife watchers report a Whistling Tree Frog sighting in Phillip Island Nature Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
April and May
In those months about 30% of wildlife watchers report a Whistling Tree Frog in Phillip Island Nature Park on a given day, against under 5% in June–August and November, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Whistling Tree Frog sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 9
Of the 9 parks where we can rate Whistling Tree Frog sightings, Phillip Island Nature Park ranks 6th at about 20%. The best odds are in Grampians National Park (Australia, about 30%), Great Otway National Park (Australia, about 30%) and Cradle Mountain-Lake St Clair National Park (Australia, about 20%).
Same order: Anura
The closest relatives of the Whistling Tree Frog that you can see in Phillip Island Nature Park (order Anura, Frogs and Toads) are Pobblebonk (about 20%) and Common Eastern Froglet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Whistling Tree Frog is recorded against all the amphibians logged in Phillip Island Nature Park (15 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
