Checkered Garter Snake
Thamnophis marcianus
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassSquamata
- FamilyColubridae (Colúbrids)
- GenusThamnophis (Garter Snakes)
- SpeciesThamnophis marcianus (Checkered Garter Snake)
5–10% of wildlife watchers report a Checkered Garter Snake sighting in Big Bend National Park, based on 14 days of visitor records from GBIF citizen-science data.
Closest Relatives at Big Bend National Park
Black-necked Gartersnake
Thamnophis cyrtopsis
Trans-pecos Ratsnake
Bogertophis subocularis
Chihuahuan Nightsnake
Hypsiglena jani
Coachwhip
Masticophis flagellum
Long-nosed Snake
Rhinocheilus lecontei
Gopher Snake
Pituophis catenifer
Great Plains Ground Snake
Sonora episcopa
Big Bend Patchnose Snake
Salvadora deserticola
Baird's Ratsnake
Pantherophis bairdi
Plain-bellied Water Snake
Nerodia erythrogaster
Glossy Snake
Arizona elegans
Striped Whipsnake
Masticophis taeniatus
📅 Monthly Probability
☀️🌙 When They're Spotted
Active throughout day and night · across all parks (global)
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 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 3 | Lago de Yojoa | 🇭🇳 Honduras |
Quick answers
What are the chances of seeing a Checkered Garter Snake in Big Bend National Park?
About 8% of wildlife watchers report a Checkered Garter Snake sighting in Big Bend National Park, based on 14 days of visitor records from GBIF citizen-science data.
When is the best time to see Checkered Garter Snake in Big Bend National Park?
September has the highest sighting rate for Checkered Garter Snake in Big Bend National Park in our monthly data.