Speyeria atlantis
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report an Atlantis Fritillary sighting in Edmonton on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 182nd most-seen of the 390 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.
June and July
In those months about 10% of wildlife watchers report an Atlantis Fritillary in Edmonton on a given day, against under 5% in August to May, the lowest months. Those are among Edmonton's wettest months, with about 90 mm of rain a month against 20 mm in February.
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.
Yes
Of the 2 cities where we can rate Atlantis Fritillary sightings, Edmonton has the highest daily chance: under 5%. Next come Calgary (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Atlantis Fritillary is recorded against all the insects logged in Edmonton (16 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.
