Kurixalus chaseni
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~70% 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. Wikipedia →
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 | Sepilok | 🇲🇾 Malaysia |
Likely
About 40% of wildlife watchers report a Chasen's Frilled Tree Frog sighting in Tanjung Puting National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
December to February
In those months about 50% of wildlife watchers report a Chasen's Frilled Tree Frog in Tanjung Puting National Park on a given day, against about 10% in March–May and September–November, the lowest months.
Between 1 and 4 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 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Chasen's Frilled Tree Frog sightings, Tanjung Puting National Park has the highest daily chance: about 40%. Next come Kinabatangan Wildlife Sanctuary (Malaysia, about 30%) and Danum Valley Conservation Area (Malaysia, about 30%).
GBIF citizen-science records
It is estimated from how often the Chasen's Frilled Tree Frog is recorded against all the amphibians logged in Tanjung Puting National Park (9 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.
