Chalcorana raniceps
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~60% 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 |
Possible
About 30% of wildlife watchers report a Copper-cheeked Frog sighting in Kinabatangan Wildlife Sanctuary on a given day, based on 32 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 20 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.
February and October
In those months about 40% of wildlife watchers report a Copper-cheeked Frog in Kinabatangan Wildlife Sanctuary on a given day, against under 5% in January and August, 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.
2nd of 4
Of the 4 parks where we can rate Copper-cheeked Frog sightings, Kinabatangan Wildlife Sanctuary ranks 2nd at about 30%. The best odds are in Bako National Park (Malaysia, about 50%).
GBIF citizen-science records
It is estimated from how often the Copper-cheeked Frog is recorded against all the amphibians logged in Kinabatangan Wildlife Sanctuary (32 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.
_Figure_4_(cropped).jpg/330px-Amnirana_nicobariensis_(10.3897-evolsyst.2.27020)_Figure_4_(cropped).jpg)
