Johnstone's Whistling Frog

Johnstone's Whistling Frog

Eleutherodactylus johnstonei

Silhouette: Jose Carlos Arenas-Monroy · PhyloPic

LCLeast ConcernNTVUENCR
Daily sighting probability ~40% · Likely
at Cali

In 3 days ~80% in a week >90%

36 Verified sightings at Cali
October Best month
🌙 Nocturnal When it's spotted

About the Johnstone's Whistling Frog

The Antilles coquí (Eleutherodactylus johnstonei), also known by the common names Johnstone's whistling frog, Montserrat whistling frog, Barbados whistling frog and Lesser Antillean whistling frog, is a species of frog in the family Eleutherodactylidae. It is native to the Lesser Antilles, but has spread across the world and is considered an invasive species.

Thomas Barbour first described the species in 1914, and gave it the specific name johnstonei after Robert S. Johnstone, Chief Justice of Grenada and the Grenadines, for his support of naturalists. The species similarity to Eleutherodactylus martinicensis, and the taxonomic history of Eleutherodactylus as a whole, has according to Hinrich Kaiser and Jerry D. Hardy Jr. been a source of confusion in determining which old publications are describing Eleutherodactylus johnstonei and which are describing a different species.

The snout-to-vent length of the species is around 35 mm (1.4 in) for females 25 mm (0.98 in) for males, but variation is high, especially so between different populations of the frog. Individuals have colourations ranging from brown to a greyish-tan, usually with colourful patterns... Wikipedia →

Sounds

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Grenada · 2025

© Luke Frishkoff · XC1103979 · CC BY-NC-SA 4.0

Recording0:15

Colombia · 2024

© Laura Sanabria · XC949880 · CC BY-NC-SA 4.0

Advertisement call0:17

Netherlands · 2012

© Chris Harrison · XC890507 · CC BY-NC-SA 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 Cali 🇨🇴 Colombia
~40%
2 Caracas 🇻🇪 Venezuela
~20%
3 Medellín 🇨🇴 Colombia
~10%

Before you go

What are the chances of seeing a Johnstone's Whistling Frog in Cali?

Likely

About 40% of wildlife watchers report a Johnstone's Whistling Frog sighting in Cali on a given day, based on 36 verified sightings from GBIF citizen-science data. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.

When is the best time to see a Johnstone's Whistling Frog in Cali?

October

In that month about 70% of wildlife watchers report a Johnstone's Whistling Frog in Cali on a given day, against under 5% in January and November, the lowest months. That is one of Cali's wettest months, with about 130 mm of rain against 40 mm in August.

What time of day is best to see a Johnstone's Whistling Frog?

Between 6 and 9 pm

Across all the parks we cover, that three-hour window holds the most Johnstone's Whistling Frog sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.

Is Cali the best place to see a Johnstone's Whistling Frog?

Yes

Of the 3 cities where we can rate Johnstone's Whistling Frog sightings, Cali has the highest daily chance: about 40%. Next come Caracas (Venezuela, about 20%) and Medellín (Colombia, about 10%).

Which relatives of the Johnstone's Whistling Frog live in Cali?

Same order: Anura

The closest relatives of the Johnstone's Whistling Frog that you can see in Cali (order Anura, Frogs and Toads) are Banana Tree Dwelling Frog (about 20%) and Giant Marine Toad (about 20%), with each one's daily chance of a sighting.

Where does the Johnstone's Whistling Frog sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Johnstone's Whistling Frog is recorded against all the amphibians logged in Cali (36 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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