Chalcorana raniceps
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days >90%
Chalcorana raniceps, also known as the copper-cheeked frog, white-lipped frog, or Peters' Malaysian frog, is a species of "true frog" in the family Ranidae. It is endemic to Borneo, including Brunei Darussalam, Kalimantan (Indonesia), Sabah and Sarawak (Malaysia), although it is likely to occur more widely. Previously mixed with Chalcorana chalconota (treated as a junior synonym or a subspecies) and believed to have much wider distribution, its range was delimited to Borneo in the revision of "Rana chalconota" complex by Robert Inger and colleagues in 2009.
Chalcorana raniceps are relatively small frogs: adult males measure 28–34 mm (1.1–1.3 in) and females 33–42 mm (1.3–1.7 in) in snout–vent length. Colouration is mostly green, sometimes with brown back. The snout is long and pointed. Finger and toe tips have adhesive disks. The thighs may be reddish undersides. It resembles Chalcorana megalonesa but is much smaller. Tadpoles are conspicuous with dark markings and red gills on light brown to yellow background; presumably, they are poisonous.
Chalcorana raniceps inhabits a broad range of lowland primary and secondary rainforest habitats. It breeds in...
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kubah National Park | 🇲🇾 Malaysia | |
| 2 | Bako National Park | 🇲🇾 Malaysia | |
| 3 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 4 | Kinabalu Park | 🇲🇾 Malaysia | |
| 5 | Sepilok | 🇲🇾 Malaysia |
Very likely
About 80% of wildlife watchers report a Copper-cheeked Frog sighting in Kubah National Park on a given day, based on 172 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 41 amphibians we can rate there. Over three days the chance rises to over 90%, if each day is a fresh chance.
February–June, August–September and November–December
In those months about 80% of wildlife watchers report a Copper-cheeked Frog in Kubah National Park on a given day, against about 60% in January and October, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Copper-cheeked 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.
Yes
Of the 5 parks where we can rate Copper-cheeked Frog sightings, Kubah National Park has the highest daily chance: about 80%. Next come Bako National Park (Malaysia, about 50%) and Kinabatangan Wildlife Sanctuary (Malaysia, about 30%).
Same family: Ranidae
The closest relatives of the Copper-cheeked Frog that you can see in Kubah National Park (family Ranidae, Typical Frogs) are Black-spotted Rock Skipper (about 70%), Brown Marsh Frog (about 40%) and Striped Stream Frog (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Copper-cheeked Frog is recorded against all the amphibians logged in Kubah National Park (172 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.
