Tipula vernalis
In 3 days ~20% in a week ~40%
Tipula vernalis is a species of cranefly found in the West Palaearctic. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Paris | 🇫🇷 France | |
| 2 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 3 | Lyon | 🇫🇷 France | |
| 4 | Amsterdam | 🇳🇱 Netherlands | |
| 5 | London | 🇬🇧 United Kingdom | |
| 6 | Birmingham | 🇬🇧 United Kingdom | |
| 7 | Essen | 🇩🇪 Germany | |
| 8 | Leeds | 🇬🇧 United Kingdom | |
| 9 | Helsinki | 🇫🇮 Finland | |
| 10 | Prague | 🇨🇿 Czechia |
With luck
About 10% of wildlife watchers report a Black-Striped Cranefly sighting in Rotterdam [The Hague] on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 128th most-seen of the 355 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April
In that month about 20% of wildlife watchers report a Black-Striped Cranefly in Rotterdam [The Hague] on a given day, against under 5% in June to March, the lowest months. That is one of Rotterdam [The Hague]'s driest months, with about 40 mm of rain against 85 mm in August.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Black-Striped Cranefly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 10 cities where we can rate Black-Striped Cranefly sightings, Rotterdam [The Hague] ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Paris (France, about 10%).
Same genus: Tipula
The closest relatives of the Black-Striped Cranefly that you can see in Rotterdam [The Hague] (genus Tipula, Common Crane Flies) are European Crane Fly (about 10%) and Tipula lateralis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-Striped Cranefly is recorded against all the insects logged in Rotterdam [The Hague] (19 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.
