What are the chances of seeing a Slender Brindle in Snowdonia National Park?
With luck
About 10% of wildlife watchers report a Slender Brindle sighting in Snowdonia National Park on a given day, based on 7 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 Slender Brindle in Snowdonia National Park?
July
In that month about 20% of wildlife watchers report a Slender Brindle in Snowdonia National Park on a given day, against under 5% in August to June, the lowest months.
What time of day is best to see a Slender Brindle?
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Slender Brindle sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Is Snowdonia National Park the best place to see a Slender Brindle?
Yes
Of the 2 parks where we can rate Slender Brindle sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, about 10%).
Which relatives of the Slender Brindle live in Snowdonia National Park?
Same family: Noctuidae
The closest relatives of the Slender Brindle that you can see in Snowdonia National Park (family Noctuidae, Cutworm Moths and Allies) are Large Yellow Underwing (about 30%), Dark Arches (about 30%) and Flame Shoulder Moth (about 20%), with each one's daily chance of a sighting.
Where does the Slender Brindle sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Slender Brindle is recorded against all the insects logged in Snowdonia National Park (7 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.