Javan Chorus Frog

Javan Chorus Frog

Microhyla achatina

LCLeast ConcernNTVUENCR Endemic
Daily sighting probability ~30% · Possible
at Jakarta

In 3 days ~70% in a week ~90%

65 Verified sightings at Jakarta
November Best month

About the Javan Chorus Frog

Microhyla achatina, commonly known as the Javan chorus frog, Java rice frog, or Javanese narrow-mouthed frog, is a species of narrow-mouthed frog endemic to Java, Indonesia. Microhyla achatina is a small species with a narrow head. Its eyes are small and the feet have partially webbed digits. Males have a snout-to-vent length around 2 cm (0.8 in) and females are a little larger. It is yellowish brown on the dorsal side with two dark stripes, with a symmetric arrow-shaped mark and sometimes a narrow pale line along the spine. The sides are dark.

This is a frog of primary and secondary forest, sometimes found around human developments, such as paddy fields and forest gardens. This species is found at altitudes up to 1,200 metres (3,900 ft) above sea level. This frog is endemic to Java and is found in the central and western parts of the island.

The diet of this frog consists of ants, termites and many other tiny insects. It breeds in ponds, permanent pools or marshy areas and the males call at night, several neighboring frogs making a chorus and producing a song that sounds like the sounds made by crickets. The call has a... Wikipedia →

Sounds

Advertisement call0:26

Indonesia · 2015

© Marc Anderson · XC883207 · CC BY-NC-ND 4.0

Recording0:11

Indonesia · 2025

© Ganjar Cahyadi · iNaturalist · CC BY-NC 4.0

Recording0:16

Indonesia · 2020

© Jarian Permana · iNaturalist · CC BY-NC 4.0

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Jakarta 🇮🇩 Indonesia
~30%
2 Bandung 🇮🇩 Indonesia
~10%

Before you go

What are the chances of seeing a Javan Chorus Frog in Jakarta?

Possible

About 30% of wildlife watchers report a Javan Chorus Frog sighting in Jakarta on a given day, based on 65 verified sightings from GBIF citizen-science data. It is the 7th most-seen of the 18 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.

When is the best time to see a Javan Chorus Frog in Jakarta?

November

In that month about 50% of wildlife watchers report a Javan Chorus Frog in Jakarta on a given day, against about 10% in June and August, the lowest months.

Is Jakarta the best place to see a Javan Chorus Frog?

Yes

Of the 2 cities where we can rate Javan Chorus Frog sightings, Jakarta has the highest daily chance: about 30%. Next come Bandung (Indonesia, about 10%).

Which relatives of the Javan Chorus Frog live in Jakarta?

Same family: Microhylidae

The closest relatives of the Javan Chorus Frog that you can see in Jakarta (family Microhylidae, Narrow-mouthed Frogs) are Smooth-Fingered Narrow-mouthed Frog (about 20%) and Asian Painted Frog (about 20%), with each one's daily chance of a sighting.

Where does the Javan Chorus Frog sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Javan Chorus Frog is recorded against all the amphibians logged in Jakarta (65 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.

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