What are the chances of seeing a Coronis Fritillary in San Francisco?
Rare
Under 5% of wildlife watchers report a Coronis Fritillary sighting in San Francisco on a given day, based on 58 verified sightings from GBIF citizen-science data. It is the 210th most-seen of the 737 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 Coronis Fritillary in San Francisco?
June and September
In those months about 10% of wildlife watchers report a Coronis Fritillary in San Francisco on a given day, against under 5% in July–August and October–May, the lowest months. Those are among San Francisco's driest months, with almost no rain against 110 mm in December.
Where else can you see a Coronis Fritillary?
Only San Francisco, in our data
San Francisco is the only city on Wallace's Line with enough records to rate Coronis Fritillary sightings: under 5% of wildlife watchers there report one on a given day.
Which relatives of the Coronis Fritillary live in San Francisco?
Same family: Nymphalidae
The closest relatives of the Coronis Fritillary that you can see in San Francisco (family Nymphalidae, Brush-footed Butterflies) are Monarch (about 30%), Red Admiral (about 20%) and Gulf Fritillary (about 20%), with each one's daily chance of a sighting.
Where does the Coronis Fritillary sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Coronis Fritillary is recorded against all the insects logged in San Francisco (58 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.