Corallus ruschenbergerii
Silhouette: T. Michael Keesey (from a photo by Maximilian Paradiz) · PhyloPic
In 3 days ~20% in a week ~40%
Corallus ruschenbergerii, commonly known as the Central American tree boa, common tree boa, and Trinidad tree boa, is a boa species found in lower Central America and northern South America. No subspecies are currently recognized. Like all boas, it is not venomous.
The specific name, ruschenbergerii, is in honor of William Ruschenberger, who was a United States Navy surgeon. Corallus ruschenbergerii is one of the largest members of the genus Corallus with adults reaching up to 2 metres (6 ft 7 in) in total length (including tail). The colors are typically shades of yellow, brown or gray, although populations on Trinidad and Tobago are often a patternless pure bronze.
Corallus ruschenbergerii is found in Lower Central America in southwestern Costa Rica (south of 10° N) and Panama, including Isla del Rey, Isla Contadora, Isla de Cébaco and Isla Suscantupu. In South America it occurs in Colombia east of the Andes, north of the Cordillera Central and north of the Cordillera Oriental, northern Venezuela north of the Cordillera de Mérida and in the drainage of the Río Orinoco, north and west of the Guiana Shield, east of the Orinoco... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Caroni Swamp | 🇹🇹 Trinidad and Tobago | |
| 2 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago | |
| 3 | Tayrona National Natural Park | 🇨🇴 Colombia | |
| 4 | Piedras Blancas National Park | 🇨🇷 Costa Rica | |
| 5 | Manuel Antonio National Park | 🇨🇷 Costa Rica |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Pairi Daiza | 🇧🇪 Belgium | |
| 2 | Zoo Miami | 🇺🇸 United States | |
| 3 | Woodland Park Zoo | 🇺🇸 United States | |
| 4 | Touroparc Zoo | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Dormilona sighting in Manuel Antonio National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 32nd most-seen of the 39 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May and October
In those months about 20% of wildlife watchers report a Dormilona in Manuel Antonio National Park on a given day, against under 5% in March, June–September and November–January, the lowest months. Those are among Manuel Antonio National Park's wettest months, with about 780 mm of rain a month against 35 mm in February.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Dormilona sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
5th of 5
Of the 5 parks where we can rate Dormilona sightings, Manuel Antonio National Park ranks 5th at about 10%. The best odds are in Caroni Swamp (Trinidad and Tobago, about 80%), Main Ridge Forest Reserve (Trinidad and Tobago, about 40%) and Tayrona National Natural Park (Colombia, about 30%). All parks ranked.
Same family: Boidae
The closest relatives of the Dormilona that you can see in Manuel Antonio National Park (family Boidae, Boas) are Central American Boa (about 20%) and Panamanian Dwarf Boa (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dormilona is recorded against all the reptiles logged in Manuel Antonio 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.
