Central American Rattlesnake
Central American RattlesnakeCentral American RattlesnakeCentral American Rattlesnake

Central American Rattlesnake

Crotalus simus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
30–40% · Possible
overall probability at Santa Rosa National Park
38 Verified records at Santa Rosa National Park
February Best month highest sighting rate
☀️🌙 Day & Night When it's active Active throughout day and night

Common names: Middle American rattlesnake, Central American rattlesnake, tzabcan (local name for subspecies C. s. tzabcan) Crotalus simus is a venomous pit viper species found in Mexico and Central America. The specific epithet is Latin for "flat-nosed", likely because its head is blunt compared with lanceheads (Bothrops). Wikipedia →

30–40% of wildlife watchers report a Central American Rattlesnake sighting in Santa Rosa National Park, based on 38 days of visitor records from GBIF citizen-science data.

Closest Relatives at Santa Rosa National Park

Slender Hognose Viper
LC

Slender Hognose Viper

🌅 Crepuscular Reptile

Porthidium ophryomegas

40–50% · Likely
Southern Cantil

Southern Cantil

🌅 Crepuscular Reptile

Agkistrodon howardgloydi

Insufficient data

📅 Monthly Probability

40–50
Jan
50–60
Feb
20–30
Mar
20–30
Apr
40–50
May
40–50
Jun
20–30
Jul
40–50
Aug
40–50
Sep
20–30
Oct
40–50
Nov
40–50
Dec

☀️🌙 When They're Spotted

Active throughout day and night · across all parks (global)

☀️🌙Day & Night
☀️🌙🌙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 Santa Rosa National Park 🇨🇷 Costa Rica
30–40%
2 Celaque National Park 🇭🇳 Honduras
Insufficient data
3 Rincón de la Vieja National Park 🇨🇷 Costa Rica
Insufficient data
4 Palo Verde National Park 🇨🇷 Costa Rica
Insufficient data
5 Ostional Wildlife Refuge 🇨🇷 Costa Rica
Insufficient data
6 Cañón del Sumidero National Park 🇲🇽 Mexico
Insufficient data

Quick answers

What are the chances of seeing a Central American Rattlesnake in Santa Rosa National Park?

About 39% of wildlife watchers report a Central American Rattlesnake sighting in Santa Rosa National Park, based on 38 days of visitor records from GBIF citizen-science data.

When is the best time to see Central American Rattlesnake in Santa Rosa National Park?

February has the highest sighting rate for Central American Rattlesnake in Santa Rosa National Park in our monthly data.

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