Chalcorana eschatia
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 eschatia is a species of "true frog" in the family Ranidae. It is known from southern Thailand, but is likely to be more widespread. It was split off from Chalcorana chalconota (then Rana chalconota) by Robert Inger and colleagues in 2009, along with a number of other species in so-called "Rana chalconota group". The specific name eschatia, derived from the Greek word for "outskirt", refers to distribution of this species being at the edge of the geographical range of the group.
Chalcorana eschatia are moderate-sized frogs: adult males measure 31–40 mm (1.2–1.6 in) and females 43–57 mm (1.7–2.2 in) in snout–vent length. Body is slender and legs are long. The snout is obtusely pointed, but rounded in profile. The tympanum is distinct, slightly larger in males than in females. The outer fingers have large discs; no webbing is present but the middle fingers have sin folds. The toe tips have discs that are smaller than the fingers ones. The webbing between the toes is extensive. Dorsal skin is granular. Preserved specimens are dark brown dorsally and on the sides; no black spots are present. The venter is whitish or cream-colored, sometimes with round dark spots... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Khao Luang National Park | 🇹🇭 Thailand |
Possible
About 30% of wildlife watchers report a Northern White-lipped Frog sighting in Khao Luang National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 6 amphibians we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
August
In that month about 50% of wildlife watchers report a Northern White-lipped Frog in Khao Luang National Park on a given day, against under 5% in January–February and May, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Northern White-lipped Frog sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Northern White-lipped Frog sightings, Khao Luang National Park ranks 2nd at about 30%. The best odds are in Khao Sok National Park (Thailand, about 50%).
Same order: Anura
The closest relatives of the Northern White-lipped Frog that you can see in Khao Luang National Park (order Anura, Frogs and Toads) are River Toad (about 40%), Common Tree Frog (about 30%) and Blyth's River Frog (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Northern White-lipped Frog is recorded against all the amphibians logged in Khao Luang National Park (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.
