Aeorestes cinereus
Silhouette: Andy Wilson · PhyloPic
In 3 days ~10% in a week ~20%
The hoary bat (Lasiurus cinereus) is a species of bat in the vesper bat family, Vespertilionidae. It lives throughout most of North America (and possibly also in Hawaii, although this is disputed). The hoary bat was described as a new species in 1796 by Palisot de Beauvois. Mammalogist Harrison Allen was the first to use its current name combination of Lasiurus cinereus, doing so in 1864. In a later publication, Allen placed it in the now-defunct genus Atalapha, with a scientific name of Atalpha cinerea.
The South American hoary bat (L. villosissimus), which is found throughout South America, and the Hawaiian hoary bat (L. semotus), which is endemic to Hawaii, were both previously classified under the hoary bat, but phylogenetic evidence supports them being distinct species.
Some have argued to elevate the subgenus (Aeorestes) to a genus level classification for L. cinereus. However, this has not been accepted by taxonomic authorities... Wikipedia →
Echolocation0:07
United States · 2026
© John Rommereim · XC1100677 · CC BY-NC-SA 4.0
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mexico City | 🇲🇽 México | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | Los Angeles | 🇺🇸 United States | |
| 4 | Chicago | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States | |
| 6 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Hoary Bat sighting in Mexico City on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 10th most-seen of the 19 mammals 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.
March
In that month about 10% of wildlife watchers report a Hoary Bat in Mexico City on a given day, against under 5% in April to February, the lowest months. That is one of Mexico City's driest months, with about 15 mm of rain against 150 mm in July.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Hoary Bat sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 6 cities where we can rate Hoary Bat sightings, Mexico City has the highest daily chance: under 5%. Next come Austin (United States, under 5%) and Los Angeles (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Hoary Bat is recorded against all the mammals logged in Mexico City (15 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.
