Chironius fuscus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~70% in a week ~90%
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 |
Possible
About 30% of wildlife watchers report a Brown Sipo sighting in Serra dos Órgãos National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 3rd most-seen of the 14 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.
November
In that month about 50% of wildlife watchers report a Brown Sipo in Serra dos Órgãos National Park on a given day, against under 5% in February, April and July–September, the lowest months. That is one of Serra dos Órgãos National Park's wettest months, with about 310 mm of rain against 50 mm in July.
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.
Among the best
Of the 5 parks where we can rate Brown Sipo sightings, Serra dos Órgãos National Park ranks 2nd at about 30%, level with the leaders once rounded. The best odds are in Brownsberg Nature Park (Suriname, about 30%).
GBIF citizen-science records
It is estimated from how often the Brown Sipo is recorded against all the reptiles logged in Serra dos Órgãos National Park (12 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.
