Rhacophorus nigropalmatus
Silhouette: PhyloPic
In 3 days ~50% in a week ~80%
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... Wikipedia →
Recording
Malaysia · 2014
© Marc Anderson · Xeno · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Khao Sok National Park | 🇹🇭 Thailand |
Possible
About 20% of wildlife watchers report a Wallace's Flying Frog sighting in Khao Sok National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 12th most-seen of the 21 amphibians we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
October
In that month about 50% of wildlife watchers report a Wallace's Flying Frog in Khao Sok National Park on a given day, against under 5% in June, September and December–March, the lowest months. That is one of Khao Sok National Park's wettest months, with about 280 mm of rain against 35 mm in February.
Between 2 and 5 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 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Wallace's Flying Frog sightings, Khao Sok National Park ranks 2nd at about 20%. 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 Khao Sok National 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.
