Kurixalus chaseni
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~60% in a week ~90%
Kurixalus chaseni, the frilled tree frog or Malay frilled tree frog, is a species of frog in the family Rhacophoridae. It is endemic to Malaysia, Indonesia, and Thailand, where it has been observed between 0 and 500 meters above sea level.
This frog has been found in forests primary forest and long-growing secondary forest. This frog is known in swampy areas with water stagnant water. Scientists believe this frog can tolerate some level of habitat disturbance. It has been seen by roadsides.
Scientists classify this frog as at least concern of extinction because of its large range, which includes protected parks, and presumed large population. What threat it faces comes from habitat loss associated with deforestation associated with forest concession and palm oil cultivation
Matsui M; Kawahara Y; Eto K; Hamidy A; Ahmad N; Hossman MYB (2018). "Distinct species status of Kurixalus chaseni (Rhacophoridae, Anura) as revealed by mitochondrial phylogeny". Alytes. 36: 170–177.
Recording0:50
Malaysia · 2019
© Matt Clancy · iNaturalist · CC BY-NC 4.0
Recording
Malaysia · 2015
© Marc Anderson · Xeno · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tanjung Puting National Park | 🇮🇩 Indonesia | |
| 2 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 3 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 4 | Kubah National Park | 🇲🇾 Malaysia | |
| 5 | Sepilok | 🇲🇾 Malaysia |
Possible
About 30% of wildlife watchers report a Chasen's Frilled Tree 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 32nd 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.
July
In that month about 50% of wildlife watchers report a Chasen's Frilled Tree Frog in Kubah National Park on a given day, against under 5% in March–April and June, the lowest months. That is one of Kubah National Park's driest months, with about 200 mm of rain against 520 mm in January.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Chasen's Frilled Tree Frog sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
4th of 5
Of the 5 parks where we can rate Chasen's Frilled Tree Frog sightings, Kubah National Park ranks 4th at about 30%. The best odds are in Tanjung Puting National Park (Indonesia, about 40%), Kinabatangan Wildlife Sanctuary (Malaysia, about 30%) and Danum Valley Conservation Area (Malaysia, about 30%).
Same family: Rhacophoridae
The closest relatives of the Chasen's Frilled Tree Frog that you can see in Kubah National Park (family Rhacophoridae, Old World Tree Frogs) are Harlequin Tree Frog (about 80%), Brown-Striped Tree Frog (about 80%) and File-eared Tree Frog (about 80%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chasen's Frilled Tree 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.
