Chalcorana raniceps
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~80% in a week >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... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bako National Park | 🇲🇾 Malaysia | |
| 2 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 3 | Kinabalu Park | 🇲🇾 Malaysia | |
| 4 | Sepilok | 🇲🇾 Malaysia |
Likely
About 50% of wildlife watchers report a Copper-cheeked Frog sighting in Bako National Park on a given day, based on 25 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 11 amphibians we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
October
In that month about 70% of wildlife watchers report a Copper-cheeked Frog in Bako National Park on a given day, against about 10% in January and March, the lowest months.
Between 1 and 4 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 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Copper-cheeked Frog sightings, Bako National Park has the highest daily chance: about 50%. Next come Kinabatangan Wildlife Sanctuary (Malaysia, about 30%) and Kinabalu Park (Malaysia, about 10%).
Same family: Ranidae
The closest relatives of the Copper-cheeked Frog that you can see in Bako National Park (family Ranidae, Typical Frogs) are Brown Marsh Frog (about 50%) and Green Paddy Frog (about 20%), 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 Bako National Park (25 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.
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