Rhacophorus nigropalmatus
Silhouette: PhyloPic
In 3 days ~60% in a week ~90%
Wallace's flying frog (Rhacophorus nigropalmatus), also known as the gliding frog or the Abah River flying frog, is a moss frog found at least from the Malay Peninsula into western Indonesia and southern Thailand, and is present in Borneo and Sumatra. It is named for the biologist, Alfred R. Wallace, who collected the first known specimen.
R. dennysii, R. maximus and Polypedates feae were once contained within Wallace's flying frog as subspecies. Similar frogs also occur in Laos, Vietnam, Malaysia, Thailand and southern China; these may be R. nigropalmatus or an undescribed, closely related species.
This frog is quite photogenic, due to its large size, brilliant colors, and interesting behavior. With a body length of about 80–100 mm (males are smaller than females), it is one of the largest species of Rhacophorus. Its eardrums are large, as well as its eyes, which feature horizontal pupils. Its limbs are very long, and its fingers and toes are webbed right to the tips. Together with a fringe of skin stretching between the limbs, this flying frog can parachute to the forest floor from high in the trees where it is normally found.
Its back is bright shiny...
Recording
Malaysia · 2014
© Marc Anderson · Xeno · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Kubah National Park | 🇲🇾 Malaysia | |
| 3 | Khao Sok National Park | 🇹🇭 Thailand |
Possible
About 30% of wildlife watchers report a Wallace's Flying Frog sighting in Kubah National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 35th most-seen of the 41 amphibians we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
June
In that month about 60% of wildlife watchers report a Wallace's Flying Frog in Kubah National Park on a given day, against under 5% in March–May, July and November–December, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Wallace's Flying Frog sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 3
Of the 3 parks where we can rate Wallace's Flying Frog sightings, Kubah National Park ranks 2nd at about 30%. The best odds are in Danum Valley Conservation Area (Malaysia, about 50%).
GBIF citizen-science records
It is estimated from how often the Wallace's Flying Frog is recorded against all the amphibians logged in Kubah National Park (12 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.
