Efferia albibarbis
In 3 days ~10% in a week ~20%
Efferia albibarbis is a species of robber fly in the family Asilidae. It is a known predator of Cicindela hirticollis and Habroscelimorpha dorsalis dorsalis. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Merritt Island National Wildlife Refuge | 🇺🇸 United States | |
| 2 | Joshua Tree National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | New York City | 🇺🇸 United States | |
| 3 | Miami | 🇺🇸 United States | |
| 4 | Chicago | 🇺🇸 United States | |
| 5 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Sand Hammertail sighting in New York City on a given day, based on 52 verified sightings from GBIF citizen-science data. It is the 389th most-seen of the 1623 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
In that month about 10% of wildlife watchers report a Sand Hammertail in New York City on a given day, against under 5% in August to June, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Sand Hammertail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 5 cities where we can rate Sand Hammertail sightings, New York City ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Sacramento (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Sand Hammertail is recorded against all the insects logged in New York City (52 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.
