Orthetrum coerulescens
In 3 days ~50% in a week ~80%
The keeled skimmer (Orthetrum coerulescens) is a species of dragonfly belonging to the family Libellulidae. The keeled skimmer is common in central and southern Europe, marginally entering into Russia, and in North Africa. It is locally common in western Britain and Ireland.
This species is present in Afghanistan; Albania; Algeria; Armenia; Austria; Azerbaijan; Bosnia and Herzegovina; Bulgaria; Croatia; Cyprus; Czech Republic; Denmark; Finland; France; Georgia; Greece; Hungary; Iran, Islamic Republic of; Iraq; Ireland; Italy; Lebanon; Liechtenstein; Lithuania; Luxembourg; Macedonia, the former Yugoslav Republic of; Montenegro; Morocco; Netherlands; Norway; Poland; Portugal; Romania; Russian Federation; Serbia; Slovakia; Slovenia; Spain; Sweden; Switzerland; Syrian Arab Republic; Tunisia; Turkey; Ukraine; United Kingdom.
The typical habitats of Orthetrum coerulescens are pools and streams in acidic heath land, where it is sometimes seen alongside golden-ringed dragonflies. Pools and streams in wet heathland sites are favoured. Orthetrum coerulescens can reach a body length of 40–44 millimetres (1.6–1.7 in). These dragonflies have a... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Plitvice Lakes National Park | 🇭🇷 Croatia | |
| 2 | Aigüestortes National Park | 🇪🇸 Spain | |
| 3 | Cévennes National Park | 🇫🇷 France | |
| 4 | Pyrénées National Park | 🇫🇷 France | |
| 5 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 6 | Mercantour National Park | 🇫🇷 France | |
| 7 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 8 | Snowdonia National Park | 🇬🇧 United Kingdom |
Possible
About 20% of wildlife watchers report a Keeled Skimmer sighting in Aigüestortes National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 256 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Keeled Skimmer in Aigüestortes National Park on a given day, against under 5% in February–May and September–December, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Keeled Skimmer sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 8
Of the 8 parks where we can rate Keeled Skimmer sightings, Aigüestortes National Park ranks 2nd at about 20%. The best odds are in Plitvice Lakes National Park (Croatia, about 30%).
GBIF citizen-science records
It is estimated from how often the Keeled Skimmer is recorded against all the insects logged in Aigüestortes National Park (15 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.
