Smilisca manisorum
Silhouette: Dmitry Bogdanov (vectorized by T. Michael Keesey) · PhyloPic
In 3 days ~80% in a week >90%
Smilisca manisorum, or the masked tree frog, is a frog in the family Hylidae, endemic to Costa Rica, Panama, Honduras and Nicaragua. It lives in coastal forests. Scientists have seen it as high as 540 meters above sea level.
The species was originally synonymized with the common Mexican tree frog (Smilisca baudinii), but was resurrected as a species in 2017. New Granada cross-banded tree frog Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 2 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 3 | Tortuguero National Park | 🇨🇷 Costa Rica | |
| 4 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
Likely
About 40% of wildlife watchers report an Eastern Masked Tree Frog sighting in Braulio Carrillo National Park on a given day, based on 134 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 10th most-seen of the 46 amphibians we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
October
In that month about 50% of wildlife watchers report an Eastern Masked Tree Frog in Braulio Carrillo National Park on a given day, against about 10% in December, the lowest month.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Eastern Masked Tree Frog sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 4 parks where we can rate Eastern Masked Tree Frog sightings, Braulio Carrillo National Park has the highest daily chance: about 40%. Next come Tenorio Volcano National Park (Costa Rica, about 30%) and Tortuguero National Park (Costa Rica, about 20%).
Same genus: Smilisca
The closest relatives of the Eastern Masked Tree Frog that you can see in Braulio Carrillo National Park (genus Smilisca, Cross-banded Tree Frogs) are Masked Tree Frog (about 20%) and Drab Tree Frog (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Masked Tree Frog is recorded against all the amphibians logged in Braulio Carrillo National Park (134 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.
