Mystacides longicornis
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 5 | Manchester | 🇬🇧 United Kingdom | |
| 6 | Minsk | 🇧🇾 Belarus | |
| 7 | Dublin | 🇮🇪 Ireland | |
| 8 | Warsaw | 🇵🇱 Poland | |
| 9 | Kyiv | 🇺🇦 Ukraine | |
| 10 | Copenhagen | 🇩🇰 Denmark |
With luck
About 10% of wildlife watchers report a Grousewing Caddisfly sighting in Rotterdam [The Hague] on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 153rd 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.
May–June and August–September
In those months about 10% of wildlife watchers report a Grousewing Caddisfly in Rotterdam [The Hague] on a given day, against under 5% in July and October–April, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Grousewing Caddisfly 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.
4th of 13
Of the 13 cities where we can rate Grousewing Caddisfly sightings, Rotterdam [The Hague] ranks 4th at about 10%. The best odds are in Liverpool (United Kingdom, about 20%), Birmingham (United Kingdom, about 10%) and London (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Grousewing Caddisfly is recorded against all the insects logged in Rotterdam [The Hague] (13 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.
