What are the chances of seeing a Cheilosia morio in Rotterdam [The Hague]?
With luck
About 10% of wildlife watchers report a Cheilosia morio sighting in Rotterdam [The Hague] on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 140th 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.
When is the best time to see a Cheilosia morio in Rotterdam [The Hague]?
April–May and July–September
In those months about 10% of wildlife watchers report a Cheilosia morio in Rotterdam [The Hague] on a given day, against under 5% in June and October–March, the lowest months.
What time of day is best to see a Cheilosia morio?
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Cheilosia morio sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Is Rotterdam [The Hague] the best place to see a Cheilosia morio?
Among the best
Of the 6 cities where we can rate Cheilosia morio sightings, Rotterdam [The Hague] ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Amsterdam (Netherlands, about 10%).
Where does the Cheilosia morio sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Cheilosia morio 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.