Mexican Brown Snake

Mexican Brown Snake

Storeria storerioides

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered Endemic
30–40% · Possible
overall probability at Reserva de la Biosfera Mariposa Monarca

Closest Relatives at Reserva de la Biosfera Mariposa Monarca

Mexican Highlands Gartersnake
LC Endemic

Mexican Highlands Gartersnake

☀️ Diurnal Reptile

Thamnophis pulchrilatus

20–30% · Possible
Middle American Gopher Snake
LC

Middle American Gopher Snake

☀️ Diurnal Reptile

Pituophis lineaticollis

10–20% · Possible
Lined Tolucan Ground Snake
LC Endemic

Lined Tolucan Ground Snake

☀️ Diurnal Reptile

Conopsis lineata

Insufficient data
Longtail Alpine Garter Snake
LC Endemic

Longtail Alpine Garter Snake

🌙 Nocturnal Reptile

Thamnophis scalaris

Insufficient data
Mexican Bull Snake
LC Endemic

Mexican Bull Snake

☀️ Diurnal Reptile

Pituophis deppei

Insufficient data
Short-tail Alpine Garter Snake
VU Endemic

Short-tail Alpine Garter Snake

Reptile

Thamnophis scaliger

Insufficient data
Bocourt's Black-headed Snake
LC Endemic

Bocourt's Black-headed Snake

☀️🌙 Day & Night Reptile

Tantilla bocourti

Insufficient data
Two-lined Mexican Earth Snake
LC Endemic

Two-lined Mexican Earth Snake

Reptile

Conopsis biserialis

Insufficient data
Baird's Patchnose Snake
LC Endemic

Baird's Patchnose Snake

Reptile

Salvadora bairdi

Insufficient data
Blackbelly Garter Snake
EN Endemic

Blackbelly Garter Snake

Reptile

Thamnophis melanogaster

Insufficient data
Mexican Gartersnake
LC

Mexican Gartersnake

Reptile

Thamnophis eques

Insufficient data
Largenose Earth Snake
LC Endemic

Largenose Earth Snake

☀️ Diurnal Reptile

Conopsis nasus

Insufficient data

📅 Monthly Probability

20–30
Jan
20–30
Feb
10–20
Mar
30–40
Apr
30–40
May
20–30
Jun
40–50
Jul
0–10
Aug
30–40
Sep
50–60
Oct
0–10
Nov
30–40
Dec

🌙 When They're Spotted

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

🌙Nocturnal
☀️🌙🌙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 Reserva de la Biosfera Mariposa Monarca 🇲🇽 Mexico
30–40%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Mexican Brown Snake in Reserva de la Biosfera Mariposa Monarca?

About 33% of visitor-days record a Mexican Brown Snake sighting in Reserva de la Biosfera Mariposa Monarca, based on 13 observer-days of citizen-science data from GBIF.

When is the best time to see Mexican Brown Snake in Reserva de la Biosfera Mariposa Monarca?

October has the highest sighting rate for Mexican Brown Snake in Reserva de la Biosfera Mariposa Monarca in our monthly data.

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