Sibon nebulatus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~50% in a week ~80%
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 20% of wildlife watchers report a Cloudy Snail-eating Snake sighting in Tortuguero National Park on a given day, based on 30 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 18th most-seen of the 34 reptiles we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
September
In that month about 40% of wildlife watchers report a Cloudy Snail-eating Snake in Tortuguero National Park on a given day, against under 5% in January, the lowest month.
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.
7th of 12
Of the 12 parks where we can rate Cloudy Snail-eating Snake sightings, Tortuguero National Park ranks 7th at about 20%. The best odds are in Braulio Carrillo National Park (Costa Rica, about 30%), Tenorio Volcano National Park (Costa Rica, about 30%) and Main Ridge Forest Reserve (Trinidad and Tobago, about 30%).
Same family: Colubridae
The closest relatives of the Cloudy Snail-eating Snake that you can see in Tortuguero National Park (family Colubridae, Colubrid Snakes) are Blunthead Tree Snake (about 40%), Green Vine Snake (about 30%) and Cope's Parrot Snake (about 10%), 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 Tortuguero National Park (30 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.
