Red-tailed Boa
Red-tailed BoaRed-tailed BoaRed-tailed BoaRed-tailed Boa

Red-tailed Boa

Boa constrictor

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
10–20% · With luck
overall probability at Yasuní National Park
27 Verified records at Yasuní National Park
April Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

The boa constrictor (scientific name also Boa constrictor), also known as the common boa, is a species of large, non-venomous, heavy-bodied snake that is frequently kept and bred in captivity. The boa constrictor is a member of the family Boidae. The species is native to tropical South America. A staple of private collections and public displays, its color pattern is highly variable yet distinctive. Four subspecies are recognized. Wikipedia →

10–20% of wildlife watchers report a Red-tailed Boa sighting in Yasuní National Park, based on 27 days of visitor records from GBIF citizen-science data.

Closest Relatives at Yasuní National Park

Anaconda
LC

Anaconda

☀️ Diurnal Reptile

Eunectes murinus

30–40% · Possible
Garden Tree Boa
LC

Garden Tree Boa

🌙 Nocturnal Reptile

Corallus hortulana

20–30% · Possible
Western Rainbow Boa
LC

Western Rainbow Boa

☀️🌙 Day & Night Reptile

Epicrates cenchria

20–30% · Possible
Bates's Tree Boa
LC

Bates's Tree Boa

☀️🌙 Day & Night Reptile

Corallus batesii

Insufficient data

📅 Monthly Probability

10–20
Jan
<5
Feb
10–20
Mar
20–30
Apr
20–30
May
20–30
Jun
20–30
Jul
20–30
Aug
20–30
Sep
10–20
Oct
10–20
Nov
10–20
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Emas National Park 🇧🇷 Brazil
30–40%
2 Main Ridge Forest Reserve 🇹🇹 Trinidad and Tobago
30–40%
3 Chapada Diamantina National Park 🇧🇷 Brazil
20–30%
4 Tijuca National Park 🇧🇷 Brazil
20–30%
5 Yasuní National Park 🇪🇨 Ecuador
10–20%
6 Cordillera Azul National Park 🇵🇪 Peru
10–20%
7 Anavilhanas National Park 🇧🇷 Brazil
10–20%
8 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
10–20%
9 Tambopata National Reserve 🇵🇪 Peru
10–20%
10 Brownsberg Nature Park 🇸🇷 Suriname
Insufficient data
11 El Impenetrable National Park 🇦🇷 Argentina
Insufficient data
12 Sierra de la Macarena National Park 🇨🇴 Colombia
Insufficient data
13 Caroni Swamp 🇹🇹 Trinidad and Tobago
Insufficient data
14 Henri Pittier National Park 🇻🇪 Venezuela
Insufficient data
15 Chapada dos Guimarães National Park 🇧🇷 Brazil
Insufficient data
16 Tayrona National Natural Park 🇨🇴 Colombia
Insufficient data
17 Serra da Canastra National Park 🇧🇷 Brazil
Insufficient data
18 Amacayacu National Natural Park 🇨🇴 Colombia
Insufficient data
19 Podocarpus National Park 🇪🇨 Ecuador
Insufficient data
20 Manu National Park 🇵🇪 Peru
Insufficient data
21 Everglades National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Red-tailed Boa in Yasuní National Park?

About 19% of wildlife watchers report a Red-tailed Boa sighting in Yasuní National Park, based on 27 days of visitor records from GBIF citizen-science data.

When is the best time to see Red-tailed Boa in Yasuní National Park?

April has the highest sighting rate for Red-tailed Boa in Yasuní National Park in our monthly data.

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