Fer-de-lance

Fer-de-lance

Bothrops asper

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~20% · Possible
at Tikal National Park
11 Verified sightings at Tikal National Park From 2019 to 2026
1,189 Verified sightings across all 38 parks From 2019 to 2026
October Best month highest sighting rate
☀️🌙 Day & Night When it's spotted Active throughout day and night

About the Fer-de-lance

The terciopelo (Bothrops asper), is a species of pit vipers, found from north-east Mexico to northern South America. At low to moderate elevations, its habitat ranges from northeastern Mexico to Colombian and Ecuadorian Andes, as well as Venezuela. With a mass of up to 6 kilograms (13 lb), and a maximal length of 2.5 metres (8.2 ft), the terciopelo is among the largest vipers. It is light to dark brown in color, often with yellowish, zig-zag patterning on either side of its body. Dubbed "the ultimate pit-viper" for its defensiveness, large size, fangs and potent venom yield, it has a fearsome reputation, responsible for the most envenomated snakebites within its range, largely due to its proximity to humans, livestock and pets. Nonetheless, like all venomous snakes, the terciopelo actively avoids contact with humans and other larger animals, with bites generally only occurring when the snake is cornered, pursued, or threatened. No subspecies are currently recognized.

The generic name, Bothrops, comes from the Greek words bothros and ops, which mean 'pit' and 'face' (or 'eye'), respectively. This is a reference to these snakes' highly sensitive heat-detecting pit organs... Wikipedia →

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 Daily sighting probability
1 Braulio Carrillo National Park 🇨🇷 Costa Rica
~50%
2 Piedras Blancas National Park 🇨🇷 Costa Rica
~50%
3 Manuel Antonio National Park 🇨🇷 Costa Rica
~50%
4 Tenorio Volcano National Park 🇨🇷 Costa Rica
~40%
5 Corcovado National Park 🇨🇷 Costa Rica
~40%
6 Arenal Volcano National Park 🇨🇷 Costa Rica
~30%
7 Utría National Natural Park 🇨🇴 Colombia
~30%
8 Soberanía National Park 🇵🇦 Panama
~30%
9 Carara National Park 🇨🇷 Costa Rica
~20%
10 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
~20%
11 Tayrona National Natural Park 🇨🇴 Colombia
~20%
12 Pico Bonito National Park 🇭🇳 Honduras
~20%
13 Marino Ballena National Park 🇨🇷 Costa Rica
~20%
14 Tortuguero National Park 🇨🇷 Costa Rica
~20%
15 Darién National Park 🇵🇦 Panama
~20%
16 Cockscomb Basin Wildlife Sanctuary 🇧🇿 Belize
~20%
17 Tikal National Park 🇬🇹 Guatemala
~20%
18 Calakmul Biosphere Reserve 🇲🇽 Mexico
~20%
19 Montes Azules Biosphere Reserve 🇲🇽 Mexico
~20%
20 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
~20%
21 Bastimentos Island National Marine Park 🇵🇦 Panama
~20%
22 Cahuita National Park 🇨🇷 Costa Rica
~10%
23 La Amistad International Park (Panama) 🇵🇦 Panama
~10%
24 Chagres National Park 🇵🇦 Panama
~10%
25 Tapantí-Macizo de la Muerte National Park 🇨🇷 Costa Rica
~10%
26 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
~10%
27 Rincón de la Vieja National Park 🇨🇷 Costa Rica
Insufficient data
28 San Lorenzo Protected Forest 🇵🇦 Panama
Insufficient data
29 El Triunfo 🇲🇽 Mexico
Insufficient data
30 Farallones de Cali National Natural Park 🇨🇴 Colombia
Insufficient data
31 Cusuco National Park 🇭🇳 Honduras
Insufficient data
32 Coiba National Park 🇵🇦 Panama
Insufficient data
33 Machalilla National Park 🇪🇨 Ecuador
Insufficient data
34 Cerro Azul Meámbar National Park 🇭🇳 Honduras
Insufficient data
35 Chirripó National Park 🇨🇷 Costa Rica
Insufficient data
36 Lago de Yojoa 🇭🇳 Honduras
Insufficient data
37 Parque Natural Metropolitano 🇵🇦 Panama
Insufficient data
38 Los Quetzales National Park 🇨🇷 Costa Rica
Insufficient data

Quick answers

What are the chances of seeing a Fer-de-lance in Tikal National Park?

About 20% of wildlife watchers report a Fer-de-lance sighting in Tikal National Park, based on 11 verified sightings from GBIF citizen-science data.

When is the best time to see Fer-de-lance in Tikal National Park?

October has the highest sighting rate for Fer-de-lance in Tikal National Park in our monthly data.

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