Satyrium calanus
In 3 days ~10% in a week ~20%
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 Washington on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 878th most-seen of the 1807 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Banded Hairstreak in Washington on a given day, so our monthly data shows no clear season.
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.
8th of 9
Of the 9 cities where we can rate Banded Hairstreak sightings, Washington ranks 8th at under 5%. The best odds are in Toronto (Canada, about 10%), Boston (United States, under 5%) and Detroit (United States, under 5%).
Same family: Lycaenidae
The closest relatives of the Banded Hairstreak that you can see in Washington (family Lycaenidae, Gossamer-winged Butterflies) are Elkalyce comyntas (about 20%), Red-Banded Hairstreak (about 10%) and Cyaniris neglecta (about 10%), 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 Washington (20 verified sightings), 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.
