Western Terrestrial Garter Snake
Western Terrestrial Garter SnakeWestern Terrestrial Garter SnakeWestern Terrestrial Garter SnakeWestern Terrestrial Garter Snake

Western Terrestrial Garter Snake

Thamnophis elegans

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Glacier National Park
118 Verified records at Glacier National Park
August Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

The western terrestrial garter snake (Thamnophis elegans) is a western North American species of colubrid snake. At least five subspecies are recognized. Wikipedia →

20–30% of wildlife watchers report a Western Terrestrial Garter Snake sighting in Glacier National Park, based on 118 days of visitor records from GBIF citizen-science data.

Closest Relatives at Glacier National Park

Common Garter Snake
LC Endemic

Common Garter Snake

☀️ Diurnal Reptile

Thamnophis sirtalis

10–20% · With luck

📅 Monthly Probability

5–10
Jan
5–10
Feb
<5
Mar
20–30
Apr
10–20
May
30–40
Jun
20–30
Jul
30–40
Aug
20–30
Sep
10–20
Oct
5–10
Nov
5–10
Dec

☀️ When They're Spotted

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

☀️Diurnal
☀️🌙🌙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 Grand Teton National Park 🇺🇸 United States
30–40%
2 Rocky Mountain National Park 🇺🇸 United States
30–40%
3 Yellowstone National Park 🇺🇸 United States
20–30%
4 Zion National Park 🇺🇸 United States
20–30%
5 Glacier National Park 🇺🇸 United States
20–30%
6 Sequoia and Kings Canyon National Parks 🇺🇸 United States
20–30%
7 Redwood National Park 🇺🇸 United States
20–30%
8 Yosemite National Park 🇺🇸 United States
10–20%
9 Banff National Park 🇨🇦 Canada
10–20%
10 Jasper National Park 🇨🇦 Canada
10–20%
11 Great Bear Rainforest 🇨🇦 Canada
10–20%
12 Grand Canyon National Park 🇺🇸 United States
5–10%
13 Olympic National Park 🇺🇸 United States
5–10%
14 Pacific Rim National Park Reserve 🇨🇦 Canada
Insufficient data
15 Channel Islands National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Western Terrestrial Garter Snake in Glacier National Park?

About 29% of wildlife watchers report a Western Terrestrial Garter Snake sighting in Glacier National Park, based on 118 days of visitor records from GBIF citizen-science data.

When is the best time to see Western Terrestrial Garter Snake in Glacier National Park?

August has the highest sighting rate for Western Terrestrial Garter Snake in Glacier National Park in our monthly data.

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