Chironius foveatus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~40% in a week ~70%
Chironius foveatus, the South American or coastal sipo, is a semi-arboreal (Harrington et al. 2018) species of non-venomous snake in the family Colubridae, found in Brazil. It primarily inhabits the southern and eastern coastal regions of the country, such as the states of Bahia, Santa Catarina, Espírito Santo and Rio de Janeiro, as well as the municipalities of Rio Fortuna and Ilhéus. It has also been observed on Ilha Grande.
Local Portuguese names include cipó, cobra-cipó, cobra-cipó verde, cobra verde, caninana, caninana-verde-de-cabeça-preta, cobra-espada and serra-velha (English: 'vine', 'vine-snake', 'green vine-snake', 'green snake', 'cane', 'black-headed green cane', 'sword-snake' and 'mountain-man'). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 2 | Tijuca National Park | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Coastal Sipo sighting in Serra dos Órgãos National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 9th most-seen of the 14 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.
September
In that month about 40% of wildlife watchers report a Coastal Sipo in Serra dos Órgãos National Park on a given day, against under 5% in February–May, August and October–December, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Coastal Sipo sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Coastal Sipo sightings, Serra dos Órgãos National Park has the highest daily chance: about 20%. Next come Tijuca National Park (Brazil, about 10%).
GBIF citizen-science records
It is estimated from how often the Coastal Sipo is recorded against all the reptiles logged in Serra dos Órgãos 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.
