Zeiraphera isertana
In 3 days ~10% in a week ~20%
Zeiraphera isertana is a moth of the family Tortricidae. It is found in China (Liaoning, Gansu, Qinghai), Russia, Europe and the Near East. The wingspan is 13–18 mm. The moth flies from July to August in western Europe. The larvae feed on the leaves of Quercus, Pyrus and Ulmus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Cock's-Head Bell sighting in Wadden Sea National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 630th most-seen of the 818 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Cock's-Head Bell in Wadden Sea National Park on a given day, against under 5% in August to June, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Cock's-Head Bell sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Wadden Sea National Park, in our data
Wadden Sea National Park is the only park on Wallace's Line with enough records to rate Cock's-Head Bell sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Tortricidae
The closest relatives of the Cock's-Head Bell that you can see in Wadden Sea National Park (family Tortricidae, Tortricid Leafroller Moths) are Garden Rose Tortrix (about 10%), Small Straw Twist (about 10%) and Dark Fruit-Tree Tortrix (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cock's-Head Bell is recorded against all the insects logged in Wadden Sea 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.
