Cerrophidion sasai
Silhouette: Steven Traver · PhyloPic
In 3 days ~40% in a week ~70%
Cerrophidion sasai, the Costa Rica montane pitviper, is a venomous snake mostly found in the southeastern parts of Mexico to the west of Panama. In Costa Rica it is found in the Cordillera Central and Cordillera de Talamanca at altitudes from 1,460 to 2,875 m (4,790 to 9,430 ft)
It is a diurnal species of snake that usually feeds on small mammals, birds, lizards, snakes, amphibians, and arthropods. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 2 | La Amistad International Park (Panama) | 🇵🇦 Panama |
Possible
About 20% of wildlife watchers report a Costa Rica Montane Pitviper sighting in Chirripó National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 7th most-seen of the 17 reptiles we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
November
In that month about 40% of wildlife watchers report a Costa Rica Montane Pitviper in Chirripó National Park on a given day, against under 5% in March–April, August–October and December, the lowest months. That is one of Chirripó National Park's wettest months, with about 450 mm of rain against 75 mm in February.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Costa Rica Montane Pitviper sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Costa Rica Montane Pitviper sightings, Chirripó National Park has the highest daily chance: about 20%. Next come La Amistad International Park (Panama) (Panama, under 5%).
Same family: Viperidae
The closest relatives of the Costa Rica Montane Pitviper that you can see in Chirripó National Park (family Viperidae, Vipers) are Side-striped palm pit viper (about 20%), Blotched Palm-pitviper (about 10%) and Black-speckled Palm Pit Viper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Costa Rica Montane Pitviper is recorded against all the reptiles logged in Chirripó National Park (9 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.
