Efferia aestuans
In 3 days ~10% in a week ~20%
| # | 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 |
Rare
Under 5% of wildlife watchers report a Northeastern Hammertail sighting in Philadelphia on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 376th most-seen of the 632 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.
July and August
In those months about 10% of wildlife watchers report a Northeastern Hammertail in Philadelphia on a given day, against under 5% in September to June, the lowest months.
6th of 10
Of the 10 cities where we can rate Northeastern Hammertail sightings, Philadelphia ranks 6th at under 5%. The best odds are in Boston (United States, about 10%), Detroit (United States, about 10%) and New York City (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 Philadelphia (13 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.
