Silhouette: Mattia Menchetti · PhyloPic
Strymon sylvinus
In 3 days ~10% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Glacier National Park | 🇺🇸 United States | |
| 2 | Olympic National Park | 🇺🇸 United States | |
| 3 | Yellowstone National Park | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Strymon sylvinus sighting in Yellowstone National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 127th most-seen of the 160 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
July and August
In those months about 10% of wildlife watchers report a Strymon sylvinus in Yellowstone National Park on a given day, against under 5% in September to June, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Strymon sylvinus sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 3
Of the 3 parks where we can rate Strymon sylvinus sightings, Yellowstone National Park ranks 3rd at under 5%. The best odds are in Glacier National Park (United States, about 10%) and Olympic National Park (United States, under 5%).
Same family: Lycaenidae
The closest relatives of the Strymon sylvinus that you can see in Yellowstone National Park (family Lycaenidae, Gossamer-winged Butterflies) are Boisduval's Blue (about 10%), Edith's Copper (about 10%) and Blue Copper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Strymon sylvinus is recorded against all the insects logged in Yellowstone National Park (7 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.
