Efferia aestuans
In 3 days ~20% in a week ~50%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Detroit | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | Philadelphia | 🇺🇸 United States | |
| 7 | Baltimore | 🇺🇸 United States | |
| 8 | Washington | 🇺🇸 United States | |
| 9 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 10 | Dallas | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Northeastern Hammertail sighting in Detroit on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 87th most-seen of the 268 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Northeastern Hammertail in Detroit on a given day, against under 5% in October to May, the lowest months.
Among the best
Of the 10 cities where we can rate Northeastern Hammertail sightings, Detroit ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Boston (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Northeastern Hammertail is recorded against all the insects logged in Detroit (22 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.
