What are the chances of seeing a Spotted Marsh Fly in Wadden Sea National Park?
Rare
Under 5% of wildlife watchers report a Spotted Marsh Fly sighting in Wadden Sea National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 536th most-seen of the 818 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
When is the best time to see a Spotted Marsh Fly in Wadden Sea National Park?
July and August
In those months about 10% of wildlife watchers report a Spotted Marsh Fly in Wadden Sea National Park on a given day, against under 5% in September to June, the lowest months.
What time of day is best to see a Spotted Marsh Fly?
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Spotted Marsh Fly sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Is Wadden Sea National Park the best place to see a Spotted Marsh Fly?
3rd of 3
Of the 3 parks where we can rate Spotted Marsh Fly sightings, Wadden Sea National Park ranks 3rd at under 5%. The best odds are in Cévennes National Park (France, about 10%) and Bavarian Forest National Park (Germany, under 5%).
Where does the Spotted Marsh Fly sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Spotted Marsh Fly is recorded against all the insects logged in Wadden Sea National Park (7 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.