Hydriomena furcata
In 3 days ~40% in a week ~70%
Hydriomena furcata, the July highflyer, is a moth of the family Geometridae. The species was first described by Carl Peter Thunberg in 1784. It is found in the Holarctic ecozone. It is extremely abundant in northern Europe; in central Europe it becomes more local and in the south it is apparently almost lacking; in Siberia and central Asia it has a wide range. The preferred habitat is moorland areas of sub-alpine and montane regions, hedgerows and woodland margins.
Hydriomena furcata can reach a wingspan of 23–30 mm (0.91–1.18 in). These moths are very variable, both in markings as well as colour. The ground colour ranges from olive green to grey, greyish brown and reddish brown. Also the dark cross bands vary in intensity and pattern. The banding is reddish brown... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 2 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 3 | Vanoise National Park | 🇫🇷 France | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manchester | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Helsinki | 🇫🇮 Finland | |
| 4 | London | 🇬🇧 United Kingdom |
Possible
About 20% of wildlife watchers report a July Highflyer Moth sighting in Snowdonia National Park on a given day, based on 37 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 61st most-seen of the 387 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
July and August
In those months about 30% of wildlife watchers report a July Highflyer Moth in Snowdonia National Park on a given day, against under 5% in September to May, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most July Highflyer Moth sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate July Highflyer Moth sightings, Snowdonia National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Cairngorms National Park (United Kingdom, about 20%).
Same family: Geometridae
The closest relatives of the July Highflyer Moth that you can see in Snowdonia National Park (family Geometridae, Geometer Moths) are Brimstone Moth (about 30%), Small Phoenix (about 20%) and Peppered Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the July Highflyer Moth is recorded against all the insects logged in Snowdonia National Park (37 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.
