Orthetrum coerulescens
In 3 days ~30% in a week ~50%
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 |
With luck
About 10% of wildlife watchers report a Keeled Skimmer sighting in Mercantour National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 272nd most-seen of the 412 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.
June
In that month about 20% of wildlife watchers report a Keeled Skimmer in Mercantour National Park on a given day, against under 5% in August and October–May, 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.
6th of 8
Of the 8 parks where we can rate Keeled Skimmer sightings, Mercantour National Park ranks 6th at about 10%. The best odds are in Plitvice Lakes National Park (Croatia, about 30%), Aigüestortes National Park (Spain, about 20%) and Cévennes National Park (France, about 20%).
Same family: Libellulidae
The closest relatives of the Keeled Skimmer that you can see in Mercantour National Park (family Libellulidae, Skimmers) are Nomad (about 20%), Four-Spotted Skimmer (about 20%) and Common Darter (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Keeled Skimmer is recorded against all the insects logged in Mercantour National Park (10 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.
