Satyrium behrii
In 3 days ~20% in a week ~40%
Satyrium behrii, the Behr's hairstreak, is a butterfly of the family Lycaenidae. It is found in western North America from western Texas north and west through New Mexico, Arizona, and southern California to British Columbia.
The wingspan is 24–32 mm. Adults are on wing from June to July in one generation per year. Its habitats include dry slopes and canyons. Adults feed on flower nectar. The larvae feed on Purshia tridentata,Purshia glandulosa and Cercocarpus montanus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grand Canyon National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Behr's Hairstreak sighting in Grand Canyon National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 56th most-seen of the 143 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 20% of wildlife watchers report a Behr's Hairstreak in Grand Canyon National Park on a given day, against under 5% in August to May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Behr's Hairstreak sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Grand Canyon National Park, in our data
Grand Canyon National Park is the only park on Wallace's Line with enough records to rate Behr's Hairstreak sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Behr's Hairstreak that you can see in Grand Canyon National Park (family Lycaenidae, Gossamer-winged Butterflies) are Gray Hairstreak (about 20%), Marine Blue (about 20%) and Juniper Hairstreak (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Behr's Hairstreak is recorded against all the insects logged in Grand Canyon National Park (14 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.
