Serica brunnea
In 3 days ~30% in a week ~60%
Serica brunnea, the brown chafer, is a species of beetle of the family Scarabaeidae. It is found in Albania, Austria, Belarus, Belgium, Bosnia Herzegovina, Bulgaria, China (Xinjiang), Croatia, the Czech Republic, Denmark, Finland, France, Germany, Great Britain, Hungary, Ireland, Italy, Kazakhstan, Latvia, Lichtenstein, Lithuania, Luxembourg, North Macedonia, Moldova, Mongolia, the Netherlands, Norway, Poland, Romania, Russia, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland and Ukraine. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vanoise National Park | 🇫🇷 France | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany | |
| 3 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 5 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Hamburg | 🇩🇪 Germany | |
| 3 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 4 | Essen | 🇩🇪 Germany | |
| 5 | Copenhagen | 🇩🇰 Denmark | |
| 6 | Berlin | 🇩🇪 Germany | |
| 7 | Amsterdam | 🇳🇱 Netherlands | |
| 8 | Warsaw | 🇵🇱 Poland | |
| 9 | Minsk | 🇧🇾 Belarus | |
| 10 | Stockholm | 🇸🇪 Sweden |
With luck
About 10% of wildlife watchers report a Brown Chafer sighting in Vanoise National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 196th most-seen of the 308 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.
July
In that month about 20% of wildlife watchers report a Brown Chafer in Vanoise National Park on a given day, against under 5% in August to June, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Brown Chafer sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 5 parks where we can rate Brown Chafer sightings, Vanoise National Park has the highest daily chance: about 10%. Next come Wadden Sea National Park (Germany, about 10%) and Cairngorms National Park (United Kingdom, about 10%).
Same family: Scarabaeidae
The closest relatives of the Brown Chafer that you can see in Vanoise National Park (family Scarabaeidae, Scarabs) are Garden Chafer (about 20%), European Rose Chafer (about 20%) and Mediterranean Spotted Chafer (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Chafer is recorded against all the insects logged in Vanoise National Park (12 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.
