Coenagrion pulchellum
In 3 days ~30% in a week ~50%
The variable damselfly or variable bluet (Coenagrion pulchellum) is a European damselfly. Despite its name, it is not the only blue damselfly prone to variable patterning. Its behaviour is much like that of the azure damselfly; it usually stays close to vegetation. Immatures are often found in adjacent meadows or uncut grassy areas. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biebrza National Park | 🇵🇱 Poland | |
| 2 | Kiskunság National Park | 🇭🇺 Hungary | |
| 3 | Białowieża National Park | 🇵🇱 Poland | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Copenhagen | 🇩🇰 Denmark | |
| 2 | Amsterdam | 🇳🇱 Netherlands | |
| 3 | Helsinki | 🇫🇮 Finland | |
| 4 | Moscow | 🇷🇺 Russia | |
| 5 | Vienna | 🇦🇹 Austria | |
| 6 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 7 | Kazan | 🇷🇺 Russia | |
| 8 | Nizhny Novgorod | 🇷🇺 Russia | |
| 9 | Saint Petersburg | 🇷🇺 Russia | |
| 10 | Warsaw | 🇵🇱 Poland |
With luck
About 10% of wildlife watchers report a Variable Bluet sighting in Copenhagen on a given day, based on 91 verified sightings from GBIF citizen-science data. It is the 53rd 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.
May and June
In those months about 20% of wildlife watchers report a Variable Bluet in Copenhagen on a given day, against under 5% in August to April, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Variable Bluet sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 12 cities where we can rate Variable Bluet sightings, Copenhagen has the highest daily chance: about 10%. Next come Amsterdam (Netherlands, about 10%) and Helsinki (Finland, about 10%).
GBIF citizen-science records
It is estimated from how often the Variable Bluet is recorded against all the insects logged in Copenhagen (91 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.
