Boana raniceps
Silhouette: Andy Wilson · PhyloPic
In 3 days ~60% in a week ~90%
The Chaco tree frog (Boana raniceps) is a frog species in the family Hylidae found in Argentina, Bolivia, Brazil, Colombia, French Guiana, Paraguay, and Venezuela. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, subtropical or tropical dry lowland grassland, rivers, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, urban areas, and heavily degraded former forests.
These organisms are considered general predators, meaning that they feed on a wide range of prey. They catch their prey using a sit-and-wait foraging technique. They tend to hunt high above the ground in the trees. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 2 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Fortaleza | 🇧🇷 Brazil |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Prague Zoo | 🇨🇿 Czechia | |
| 2 | Paignton Zoo | 🇬🇧 United Kingdom | |
| 3 | Rákosův pavilon | 🇨🇿 Czechia | |
| 4 | Velemlokárium | 🇨🇿 Czechia |
Possible
About 20% of wildlife watchers report a Chaco Tree Frog sighting in Parque Estadual Encontro das Águas on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
December
In that month about 60% of wildlife watchers report a Chaco Tree Frog in Parque Estadual Encontro das Águas on a given day, against under 5% in May to July, the lowest months. That is one of Parque Estadual Encontro das Águas's wettest months, with about 180 mm of rain against almost none in July.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Chaco Tree Frog sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 2
Of the 2 parks where we can rate Chaco Tree Frog sightings, Parque Estadual Encontro das Águas ranks 2nd at about 20%. The best odds are in El Impenetrable National Park (Argentina, about 30%).
GBIF citizen-science records
It is estimated from how often the Chaco Tree Frog is recorded against all the amphibians logged in Parque Estadual Encontro das Águas (8 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.
