Chironius exoletus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~10% in a week ~30%
Chironius exoletus is a species of snake of the family Colubridae. It is commonly known as Linnaeus's sipo. The snake is found in South America and Central America. Species Chironius exoletus at The Reptile Database Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 2 | Tambopata National Reserve | 🇵🇪 Peru | |
| 3 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San José | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Linnaeus' Sipo sighting in Arenal Volcano National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 61st most-seen of the 64 reptiles we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
February–March and May
In those months about 10% of wildlife watchers report a Linnaeus' Sipo in Arenal Volcano National Park on a given day, against under 5% in April and June–January, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Linnaeus' Sipo sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 parks where we can rate Linnaeus' Sipo sightings, Arenal Volcano National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Monteverde Cloud Forest Reserve (Costa Rica, about 10%) and Tambopata National Reserve (Peru, about 10%).
GBIF citizen-science records
It is estimated from how often the Linnaeus' Sipo is recorded against all the reptiles logged in Arenal Volcano National Park (5 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.
