barred grass snake
barred grass snakebarred grass snakebarred grass snakebarred grass snake

barred grass snake

Natrix helvetica

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

The barred grass snake (Natrix helvetica) is a non-venomous colubrid snake from Western Europe, typically living in and close to water. It was included within the grass snake species, Natrix natrix, until August 2017, when genetic analysis led to its reclassification as a separate species. Wikipedia →

20–30% of wildlife watchers report a barred grass snake sighting in Snowdonia National Park, based on 50 days of visitor records from GBIF citizen-science data.

Closest Relatives at Snowdonia National Park

Aesculapian Snake
LC

Aesculapian Snake

☀️ Diurnal Reptile

Zamenis longissimus

Insufficient data

📅 Monthly Probability

<5
Jan
<5
Feb
10–20
Mar
30–40
Apr
40–50
May
30–40
Jun
30–40
Jul
20–30
Aug
20–30
Sep
<5
Oct
<5
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 Snowdonia National Park 🇬🇧 United Kingdom
20–30%
2 Cévennes National Park 🇫🇷 France
20–30%
3 Mercantour National Park 🇫🇷 France
10–20%
4 Pyrénées National Park 🇫🇷 France
5–10%
5 Wadden Sea National Park 🇩🇪 Germany
<5%
6 Aigüestortes National Park 🇪🇸 Spain
Insufficient data

Quick answers

What are the chances of seeing a barred grass snake in Snowdonia National Park?

About 28% of wildlife watchers report a barred grass snake sighting in Snowdonia National Park, based on 50 days of visitor records from GBIF citizen-science data.

When is the best time to see barred grass snake in Snowdonia National Park?

May has the highest sighting rate for barred grass snake in Snowdonia National Park in our monthly data.

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