Oeneis jutta
In 3 days ~20% in a week ~40%
Oeneis jutta, the Jutta Arctic or Baltic grayling, is a species of butterfly in the subfamily Satyrinae with a Circumboreal distribution. It occurs in bogs and tundra in the north of Europe, the Baltic states, the Urals, Siberia, northern Kazakhstan, the Russian Far East, northern Mongolia, northeastern China, North Korea, and northern North America (Canada from Newfoundland to British Columbia). Larvae feed on Carex and Eriophorum, possibly also Glyceria, Molinia, and Juncus. Ledum palustre is the preferred nectar plant of the adult butterflies. The species has one generation every one or two years, depending on the location. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Denali National Park | 🇺🇸 United States | |
| 2 | Grand Teton National Park | 🇺🇸 United States | |
| 3 | Yellowstone National Park | 🇺🇸 United States | |
| 4 | Rocky Mountain National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Jutta Arctic sighting in Grand Teton National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 102nd most-seen of the 140 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Jutta Arctic in Grand Teton National Park on a given day, against under 5% in August to June, the lowest months. That is one of Grand Teton National Park's driest months, with about 20 mm of rain against 85 mm in December.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Jutta Arctic sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 4
Of the 4 parks where we can rate Jutta Arctic sightings, Grand Teton National Park ranks 2nd at about 10%. The best odds are in Denali National Park (United States, about 20%).
Same family: Nymphalidae
The closest relatives of the Jutta Arctic that you can see in Grand Teton National Park (family Nymphalidae, Brush-footed Butterflies) are Weidemeyer's Admiral (about 30%), Green Comma (about 30%) and California Tortoiseshell (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Jutta Arctic is recorded against all the insects logged in Grand Teton National Park (8 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.
