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 Dallas on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 1213th most-seen of the 1412 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 Northeastern Hammertail in Dallas on a given day, so our monthly data shows no clear season.
10th of 10
Of the 10 cities where we can rate Northeastern Hammertail sightings, Dallas ranks 10th 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%).
Same family: Asilidae
The closest relatives of the Northeastern Hammertail that you can see in Dallas (family Asilidae, Robber Flies) are Golden-Tailed Beebandit (about 10%) and Maroon-Legged Lion Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Northeastern Hammertail is recorded against all the insects logged in Dallas (6 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.
