Chironius fuscus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~40% in a week ~70%
The brown sipo (Chironius fuscus) is a species of snake of the family Colubridae. The snake is found in South America and Central America. Species Chironius fuscus at The Reptile Database Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 3 | Manu National Park | 🇵🇪 Peru | |
| 4 | Tambopata National Reserve | 🇵🇪 Peru | |
| 5 | Tijuca National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rio de Janeiro | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Brown Sipo sighting in Tambopata National Reserve on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 26th most-seen of the 47 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.
January–April and July–August
In those months about 20% of wildlife watchers report a Brown Sipo in Tambopata National Reserve on a given day, against under 5% in May, September–October and December, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Brown Sipo sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
4th of 5
Of the 5 parks where we can rate Brown Sipo sightings, Tambopata National Reserve ranks 4th at about 10%. The best odds are in Brownsberg Nature Park (Suriname, about 30%), Serra dos Órgãos National Park (Brazil, about 30%) and Manu National Park (Peru, about 20%).
GBIF citizen-science records
It is estimated from how often the Brown Sipo is recorded against all the reptiles logged in Tambopata National Reserve (13 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.
