Satyrium calanus
In 3 days ~10% in a week ~30%
Satyrium calanus, the banded hairstreak, is a butterfly in the family Lycaenidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Acadia National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 4 | Joshua Tree National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Detroit | 🇺🇸 United States | |
| 4 | Chicago | 🇺🇸 United States | |
| 5 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 6 | Montreal | 🇨🇦 Canada | |
| 7 | New York City | 🇺🇸 United States | |
| 8 | Washington | 🇺🇸 United States | |
| 9 | Dallas | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Banded Hairstreak sighting in Joshua Tree National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 147th most-seen of the 190 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.
May
In that month about 10% of wildlife watchers report a Banded Hairstreak in Joshua Tree National Park on a given day, against under 5% in June to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Banded 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.
4th of 4
Of the 4 parks where we can rate Banded Hairstreak sightings, Joshua Tree National Park ranks 4th at under 5%. The best odds are in Shenandoah National Park (United States, about 10%), Acadia National Park (United States, about 10%) and Great Smoky Mountains National Park (United States, about 10%).
Same family: Lycaenidae
The closest relatives of the Banded Hairstreak that you can see in Joshua Tree National Park (family Lycaenidae, Gossamer-winged Butterflies) are Great Purple Hairstreak (about 30%), Marine Blue (about 20%) and Western Pygmy-Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Banded Hairstreak is recorded against all the insects logged in Joshua Tree 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.
