What are the chances of seeing a Campyloneura virgula in Rotterdam [The Hague]?
With luck
About 10% of wildlife watchers report a Campyloneura virgula sighting in Rotterdam [The Hague] on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 107th 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.