Sibon nebulatus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~70% in a week ~90%
Sibon nebulatus, commonly known as the cloudy snail-eating snake, is a species of small, slender arboreal snake which is found in southern Mexico, Central America, northern South America, Isla Margarita, and Trinidad and Tobago.
The body colour of S. nebulatus varies from grey to brown with dark brown irregular ring-like crossbands. These crossbands are edged by fine, irregular, beige spots. The belly ranges from white to beige, speckled with tiny dark brown points. The labial scale on the upper lip behind the eye is enlarged. In cloud forests of northwestern Ecuador, S. nebulatus is often confused with another snake, the Elegant Snail-Eater (Dipsas elegans), which can be distinguished by its pairs of narrow vertical bars between which there is a more pale bar, as opposed to the unpaired vertical bars of S. nebulatus.
Boos, Hans E.A. (2001). The Snakes of Trinidad and Tobago. College Station, Texas: Texas A&M University Press. ISBN 1-58544-116-3. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 2 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 3 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago | |
| 4 | Tayrona National Natural Park | 🇨🇴 Colombia | |
| 5 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 6 | Piedras Blancas National Park | 🇨🇷 Costa Rica | |
| 7 | Tortuguero National Park | 🇨🇷 Costa Rica | |
| 8 | Gandoca-Manzanillo Wildlife Refuge | 🇨🇷 Costa Rica | |
| 9 | Cahuita National Park | 🇨🇷 Costa Rica | |
| 10 | Calakmul Biosphere Reserve | 🇲🇽 Mexico | |
| 11 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 12 | La Amistad International Park (Panama) | 🇵🇦 Panama |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Medellín | 🇨🇴 Colombia |
Possible
About 30% of wildlife watchers report a Cloudy Snail-eating Snake sighting in Braulio Carrillo National Park on a given day, based on 100 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 16th most-seen of the 57 reptiles we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
June
In that month about 50% of wildlife watchers report a Cloudy Snail-eating Snake in Braulio Carrillo National Park on a given day, against about 20% in April, July and October–January, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Cloudy Snail-eating Snake 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.
Yes
Of the 12 parks where we can rate Cloudy Snail-eating Snake sightings, Braulio Carrillo National Park has the highest daily chance: about 30%. Next come Tenorio Volcano National Park (Costa Rica, about 30%) and Main Ridge Forest Reserve (Trinidad and Tobago, about 30%).
Same genus: Sibon
The closest relatives of the Cloudy Snail-eating Snake that you can see in Braulio Carrillo National Park (genus Sibon, Snail Suckers) are Mottled Snail-eater (about 20%) and Ringed Snail Sucker (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cloudy Snail-eating Snake is recorded against all the reptiles logged in Braulio Carrillo National Park (100 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.
