What are the chances of seeing a Straw-Barred Pearl in Porto?
With luck
About 10% of wildlife watchers report a Straw-Barred Pearl sighting in Porto on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 153rd most-seen of the 498 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 Straw-Barred Pearl in Porto?
October
In that month about 20% of wildlife watchers report a Straw-Barred Pearl in Porto on a given day, against under 5% in May–June and November–March, the lowest months. That is one of Porto's wettest months, with about 140 mm of rain against 15 mm in July.
What time of day is best to see a Straw-Barred Pearl?
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Straw-Barred Pearl 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 Porto the best place to see a Straw-Barred Pearl?
10th of 18
Of the 18 cities where we can rate Straw-Barred Pearl sightings, Porto ranks 10th at about 10%. The best odds are in Turin (Italy, about 20%), Lyon (France, about 10%) and Prague (Czechia, about 10%).
Where does the Straw-Barred Pearl sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Straw-Barred Pearl is recorded against all the insects logged in Porto (39 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.