Boloria epithore
In 3 days ~50% in a week ~80%
Boloria epithore, the Pacific fritillary, is a butterfly of the family Nymphalidae. It is found in western North America from California to British Columbia and Alberta. The wingspan is 34–44 millimetres (1.3–1.7 in). The butterfly flies from June to July.
The larvae feed on Viola ocellata. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 2 | Glacier National Park | 🇺🇸 United States | |
| 3 | Olympic National Park | 🇺🇸 United States | |
| 4 | Yosemite National Park | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Pacific Fritillary sighting in Sequoia and Kings Canyon National Parks on a given day, based on 53 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 12th most-seen of the 161 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
June
In that month about 40% of wildlife watchers report a Pacific Fritillary in Sequoia and Kings Canyon National Parks on a given day, against under 5% in September to April, the lowest months. That is one of Sequoia and Kings Canyon National Parks's driest months, with about 25 mm of rain against 190 mm in January.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Pacific Fritillary sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Pacific Fritillary sightings, Sequoia and Kings Canyon National Parks has the highest daily chance: about 20%. Next come Glacier National Park (United States, about 10%) and Olympic National Park (United States, about 10%).
Same family: Nymphalidae
The closest relatives of the Pacific Fritillary that you can see in Sequoia and Kings Canyon National Parks (family Nymphalidae, Brush-footed Butterflies) are Limenitis bredowii (about 40%), California Tortoiseshell (about 20%) and Lorquin's Admiral (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pacific Fritillary is recorded against all the insects logged in Sequoia and Kings Canyon National Parks (53 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.
