Camptogramma bilineata
In 3 days ~30% in a week ~60%
Camptogramma bilineata, the yellow shell, is a colourful moth of the family Geometridae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. It can be found in Europe and east across the Palearctic to the Altai Mountains. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Biebrza National Park | 🇵🇱 Poland | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 5 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 6 | Wadden Sea National Park | 🇩🇪 Germany | |
| 7 | Aigüestortes National Park | 🇪🇸 Spain | |
| 8 | Picos de Europa National Park | 🇪🇸 Spain | |
| 9 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 10 | Cévennes National Park | 🇫🇷 France | |
| 11 | Triglav National Park | 🇸🇮 Slovenia | |
| 12 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 13 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Kharkiv | 🇺🇦 Ukraine | |
| 3 | Birmingham | 🇬🇧 United Kingdom | |
| 4 | London | 🇬🇧 United Kingdom | |
| 5 | Budapest | 🇭🇺 Hungary | |
| 6 | Kyiv | 🇺🇦 Ukraine | |
| 7 | Berlin | 🇩🇪 Germany | |
| 8 | Prague | 🇨🇿 Czechia | |
| 9 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 10 | Vienna | 🇦🇹 Austria |
With luck
About 10% of wildlife watchers report a Yellow Shell Moth sighting in Prague on a given day, based on 123 verified sightings from GBIF citizen-science data. It is the 42nd most-seen of the 724 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
August and September
In those months about 30% of wildlife watchers report a Yellow Shell Moth in Prague on a given day, against under 5% in November to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Yellow Shell Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
8th of 30
Of the 30 cities where we can rate Yellow Shell Moth sightings, Prague ranks 8th at about 10%. The best odds are in Liverpool (United Kingdom, about 20%), Kharkiv (Ukraine, about 20%) and Birmingham (United Kingdom, about 20%).
Same family: Geometridae
The closest relatives of the Yellow Shell Moth that you can see in Prague (family Geometridae, Geometer Moths) are Common Heath (about 10%), Willow Beauty (about 10%) and Winter Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Shell Moth is recorded against all the insects logged in Prague (123 verified sightings), 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.
