Chalcorana raniceps
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~30% in a week ~50%
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 |
With luck
About 10% of wildlife watchers report a Copper-cheeked Frog sighting in Sepilok on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 14th most-seen of the 18 amphibians we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
January
In that month about 30% of wildlife watchers report a Copper-cheeked Frog in Sepilok on a given day, against under 5% in February, April, June and September–December, 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.
4th of 4
Of the 4 parks where we can rate Copper-cheeked Frog sightings, Sepilok ranks 4th at about 10%. The best odds are in Bako National Park (Malaysia, about 50%), Kinabatangan Wildlife Sanctuary (Malaysia, about 30%) and Kinabalu Park (Malaysia, about 10%).
GBIF citizen-science records
It is estimated from how often the Copper-cheeked Frog is recorded against all the amphibians logged in Sepilok (7 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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