Oeneis bore
In 3 days ~30% in a week ~50%
Oeneis bore, the white-veined Arctic or Arctic grayling, is a butterfly, a species of Satyrinae that occurs in North America and Asia. The wingspan is 37 to 49 mm. The dorsal view is a dull greyish brown while the females are often tawny. Males have a dark grey node in the centre of the forewing.
Occurs from Lapland and northern Russia and across Arctic Canada from Labrador to British Columbia; also... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wrangell-St. Elias National Park | 🇺🇸 United States | |
| 2 | Kluane National Park | 🇨🇦 Canada | |
| 3 | Denali National Park | 🇺🇸 United States | |
| 4 | Banff National Park | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a White-Veined Arctic sighting in Denali National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 32nd most-seen of the 36 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a White-Veined Arctic in Denali National Park on a given day, against under 5% in March–June and September–October, the lowest months. That is one of Denali National Park's wettest months, with about 150 mm of rain against 45 mm in April. November to February have too few records to rate.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most White-Veined Arctic sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 4
Of the 4 parks where we can rate White-Veined Arctic sightings, Denali National Park ranks 3rd at about 10%. The best odds are in Wrangell-St. Elias National Park (United States, about 40%) and Kluane National Park (Canada, about 20%).
GBIF citizen-science records
It is estimated from how often the White-Veined Arctic is recorded against all the insects logged in Denali National Park (5 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.
