Chalcorana chalconota
Silhouette: Michael Scroggie, from original photograph by John Bettaso, USFWS (original photograph in public domain). · PhyloPic
In 3 days ~70% in a week >90%
Chalcorana chalconota is a species of "true frog", family Ranidae. It is endemic to Indonesia and occurs in southern Sumatra, Java, Bali, and a few smaller islands. Populations previously assigned to this species now belong to a number of other Chalcorana species, leading to the current delineation of Chalcorana chalconota with a much narrower range. This species is also known as the Schlegel's frog, brown stream frog, copper-cheeked frog, or, among with many other species, white-lipped frog.
Chalcorana chalconota are relatively large frogs: adult males measure 34–50 mm (1.3–2.0 in) and females 49–73 mm (1.9–2.9 in) in snout–vent length. The legs are relatively short. The snout is slightly projecting. The tympanum is visible, slightly depressed. The finger tips are much enlarged. Coloration is green; the back may have black spots. Hind limbs may have crossbars. Dorsal skin is granular in females and has many fine spinules in males. Males also have conspicuously protruding humeral glands.
Chalcorana chalconota can be found along small lowland forest streams, but also away from streams in forest and in highland areas at elevations up to... Wikipedia →
Recording0:19
Indonesia · 2022
© Julia · iNaturalist · CC BY-NC 4.0
Recording0:54
Indonesia · 2025
© Colin Trainor · iNaturalist · CC BY-NC 4.0
Recording1:16
2023
© Averroes Oktaliza · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Malang | 🇮🇩 Indonesia | |
| 2 | Jakarta | 🇮🇩 Indonesia | |
| 3 | Yogyakarta | 🇮🇩 Indonesia | |
| 4 | Tasikmalaya | 🇮🇩 Indonesia | |
| 5 | Bandung | 🇮🇩 Indonesia | |
| 6 | Semarang | 🇮🇩 Indonesia |
Likely
About 40% of wildlife watchers report a Schlegel's Frog sighting in Semarang on a given day, based on 8 verified sightings from GBIF citizen-science data. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
February
In that month about 70% of wildlife watchers report a Schlegel's Frog in Semarang on a given day, against about 10% in March–October and December–January, the lowest months. That is one of Semarang's wettest months, with about 350 mm of rain against 30 mm in August.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Schlegel's Frog sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
6th of 6
Of the 6 cities where we can rate Schlegel's Frog sightings, Semarang ranks 6th at about 40%. The best odds are in Malang (Indonesia, about 60%), Jakarta (Indonesia, about 50%) and Yogyakarta (Indonesia, about 50%).
Same order: Anura
The closest relatives of the Schlegel's Frog that you can see in Semarang (order Anura, Frogs and Toads) are Common Indian Toad (about 60%), Common Tree Frog (about 40%) and Smooth-Fingered Narrow-mouthed Frog (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Schlegel's Frog is recorded against all the amphibians logged in Semarang (8 verified sightings), 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.
