What are the chances of seeing a Common Marble in Snowdonia National Park?
With luck
About 10% of wildlife watchers report a Common Marble sighting in Snowdonia National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 294th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
When is the best time to see a Common Marble in Snowdonia National Park?
June
In that month about 20% of wildlife watchers report a Common Marble in Snowdonia National Park on a given day, against under 5% in July to April, the lowest months.
What time of day is best to see a Common Marble?
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Common Marble sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Is Snowdonia National Park the best place to see a Common Marble?
Among the best
Of the 5 parks where we can rate Common Marble sightings, Snowdonia National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Bavarian Forest National Park (Germany, about 10%) and Triglav National Park (Slovenia, about 10%).
Which relatives of the Common Marble live in Snowdonia National Park?
Same family: Tortricidae
The closest relatives of the Common Marble that you can see in Snowdonia National Park (family Tortricidae, Tortricid Leafroller Moths) are Light Brown Apple Moth (about 10%), Common Yellow Conch (about 10%) and Green Oak Tortrix (about 10%), with each one's daily chance of a sighting.
Where does the Common Marble sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Common Marble is recorded against all the insects logged in Snowdonia National Park (6 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.