Eurema arbela
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Boisduval's Grass Yellow sighting in São Paulo on a given day, based on 51 verified sightings from GBIF citizen-science data. It is the 133rd most-seen of the 832 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.
April to August
In those months about 10% of wildlife watchers report a Boisduval's Grass Yellow in São Paulo on a given day, against under 5% in September to March, the lowest months. Those are among São Paulo's driest months, with about 60 mm of rain a month against 230 mm in January.
Among the best
Of the 2 cities where we can rate Boisduval's Grass Yellow sightings, São Paulo ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Curitiba (Brazil, about 10%).
Same genus: Eurema
The closest relatives of the Boisduval's Grass Yellow that you can see in São Paulo (genus Eurema, Grass Yellows) are Banded Yellow (about 10%) and Ghost Yellow (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Boisduval's Grass Yellow is recorded against all the insects logged in São Paulo (51 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.
