Peribatodes rhomboidaria
In 3 days ~30% in a week ~50%
The willow beauty (Peribatodes rhomboidaria) is a moth of the family Geometridae. It is a common species of Europe and adjacent regions (Near East and the Maghreb). While it is found widely throughout Scandinavian countries, which have a maritime climate, it is absent from parts of the former USSR which are at the same latitude but have a more continental climate.
Peribatodes rhomboidaria rhomboidaria (Denis & Schiffermüller, 1775) Peribatodes rhomboidaria sublutearia (Zerny 1927) Under its junior synonym Geometra rhomboidaria, the willow beauty is the type species of its genus Peribatodes. This was initially proposed as a subgenus of Boarmia but eventually elevated to full genus rank.
The adult's wingspan is 40–48 mm. The wings of this species are whitish-grey or -yellowish, though they have a buff or grey appearance from a distance, as they are heavily speckled with brown or black dots... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 4 | Aigüestortes National Park | 🇪🇸 Spain | |
| 5 | Pyrénées National Park | 🇫🇷 France | |
| 6 | Wadden Sea National Park | 🇩🇪 Germany | |
| 7 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 8 | Fertő-Hanság National Park | 🇭🇺 Hungary |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Kharkiv | 🇺🇦 Ukraine | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Budapest | 🇭🇺 Hungary | |
| 6 | Manchester | 🇬🇧 United Kingdom | |
| 7 | Kyiv | 🇺🇦 Ukraine | |
| 8 | Porto | 🇵🇹 Portugal | |
| 9 | Turin | 🇮🇹 Italy | |
| 10 | Sofia | 🇧🇬 Bulgaria |
With luck
About 10% of wildlife watchers report a Willow Beauty sighting in Copenhagen on a given day, based on 56 verified sightings from GBIF citizen-science data. It is the 61st most-seen of the 476 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
August
In that month about 20% of wildlife watchers report a Willow Beauty in Copenhagen on a given day, against under 5% in October to May, the lowest months. That is one of Copenhagen's wettest months, with about 85 mm of rain against 35 mm in April.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Willow Beauty 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.
20th of 34
Of the 34 cities where we can rate Willow Beauty sightings, Copenhagen ranks 20th at about 10%. The best odds are in Liverpool (United Kingdom, about 40%), London (United Kingdom, about 20%) and Kharkiv (Ukraine, about 20%).
GBIF citizen-science records
It is estimated from how often the Willow Beauty is recorded against all the insects logged in Copenhagen (56 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.
