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 Boston on a given day, based on 40 verified sightings from GBIF citizen-science data. It is the 307th most-seen of the 1200 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.
June and July
In those months about 10% of wildlife watchers report a Banded Hairstreak in Boston 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 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.
2nd of 9
Of the 9 cities where we can rate Banded Hairstreak sightings, Boston ranks 2nd at under 5%. The best odds are in Toronto (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Banded Hairstreak is recorded against all the insects logged in Boston (40 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.
