Speyeria atlantis
In 3 days ~40% in a week ~70%
Speyeria atlantis, the Atlantis fritillary, is a butterfly of the family Nymphalidae of North America. It is found from the Avalon Peninsula of Newfoundland and Labrador to northern British Columbia, across the northern United States south as far as Colorado and West Virginia. It resides as far north as James Bay. The species is listed as endangered in Connecticut.
Its upperside is dark orange with many rows of black markings and black wing margins. Its underside is a light brown with many silvery-white spots. Wingspan ranges from 50–64 millimetres (2.0–2.5 in). The larvae are hosted by violets. Adult foods include common milkweed, mint, mountain laurel, crown vetch, burdock, boneset, ox-eye daisy, spiraea, and virgin's bower.
Atlantis fritillaries are sensitive to temperature with population trajectories showing declines in response to climate warming trends. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 2 | Elk Island National Park | 🇨🇦 Canada | |
| 3 | Banff National Park | 🇨🇦 Canada | |
| 4 | Gros Morne National Park | 🇨🇦 Canada | |
| 5 | Jasper National Park | 🇨🇦 Canada | |
| 6 | Acadia National Park | 🇺🇸 United States | |
| 7 | Grand Canyon National Park | 🇺🇸 United States | |
| 8 | Glacier National Park | 🇺🇸 United States | |
| 9 | Rocky Mountain National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report an Atlantis Fritillary sighting in Banff National Park on a given day, based on 81 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 12th most-seen of the 105 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 30% of wildlife watchers report an Atlantis Fritillary in Banff National Park on a given day, against under 5% in October to June, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Atlantis Fritillary sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 9
Of the 9 parks where we can rate Atlantis Fritillary sightings, Banff National Park ranks 3rd at about 10%. The best odds are in Cape Breton Highlands National Park (Canada, about 20%) and Elk Island National Park (Canada, about 20%).
Same genus: Speyeria
The closest relatives of the Atlantis Fritillary that you can see in Banff National Park (genus Speyeria) are Mormon Fritillary (about 10%) and Hydaspe Fritillary (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Atlantis Fritillary is recorded against all the insects logged in Banff National Park (81 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.
