Plain-bellied Water Snake
Nerodia erythrogaster
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassSquamata
- FamilyColubridae (Colúbrids)
- GenusNerodia (Watersnakes)
- SpeciesNerodia erythrogaster (Plain-bellied Water Snake)
Closest Relatives at Big Bend National Park
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
Black-necked Gartersnake
Thamnophis cyrtopsis
Big Bend Patchnose Snake
Salvadora deserticola
Baird's Ratsnake
Pantherophis bairdi
Glossy Snake
Arizona elegans
Striped Whipsnake
Masticophis taeniatus
Checkered Garter Snake
Thamnophis marcianus
📅 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 | Congaree National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States | |
| 3 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
Quick answers
What are the chances of seeing a Plain-bellied Water Snake in Big Bend National Park?
About 13% of visitor-days record a Plain-bellied Water Snake sighting in Big Bend National Park, based on 28 observer-days of citizen-science data from GBIF.
When is the best time to see Plain-bellied Water Snake in Big Bend National Park?
April has the highest sighting rate for Plain-bellied Water Snake in Big Bend National Park in our monthly data.