Silhouette: Mattia Menchetti · PhyloPic
Eresia aveyrona
In 3 days ~30% in a week ~60%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States | |
| 2 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 3 | Yosemite National Park | 🇺🇸 United States | |
| 4 | Olympic National Park | 🇺🇸 United States | |
| 5 | Great Bear Rainforest | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Francisco | 🇺🇸 United States | |
| 2 | Portland | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report an Eresia aveyrona sighting in Yosemite National Park on a given day, based on 47 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 36th most-seen of the 227 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
September and October
In those months about 20% of wildlife watchers report an Eresia aveyrona in Yosemite National Park on a given day, against under 5% in December to April, the lowest months. Those are among Yosemite National Park's driest months, with about 35 mm of rain a month against 220 mm in January.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Eresia aveyrona sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 parks where we can rate Eresia aveyrona sightings, Yosemite National Park ranks 3rd at about 10%. The best odds are in Redwood National Park (United States, about 20%) and Sequoia and Kings Canyon National Parks (United States, about 10%).
Same family: Nymphalidae
The closest relatives of the Eresia aveyrona that you can see in Yosemite National Park (family Nymphalidae, Brush-footed Butterflies) are Limenitis bredowii (about 40%), California Tortoiseshell (about 30%) and Mormon Fritillary (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eresia aveyrona is recorded against all the insects logged in Yosemite National Park (47 verified sightings from 2019 to 2026), 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.
