Hoary Bat

Hoary Bat

Aeorestes cinereus

Daily sighting probability Insufficient data
at Saguaro National Park
3 Verified sightings at Saguaro National Park From 2019 to 2026
25 Verified sightings across all 9 parks From 2019 to 2026
☀️🌙 Day & Night When it's spotted Active throughout day and night

About the Hoary Bat

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. Beauvois noted that the holotype was collected in the US state of Pennsylvania by an individual identified as "Master Pancake". It has many taxonomic synonyms, including Vespertilio pruinosis (Say, 1823) and Atalpha mexicana (Saussure, 1861). 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 →

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Death Valley National Park 🇺🇸 United States
~10%
2 Big Bend National Park 🇺🇸 United States
~10%
3 Grand Canyon National Park 🇺🇸 United States
Insufficient data
4 Point Pelee National Park 🇨🇦 Canada
Insufficient data
5 Glacier National Park 🇺🇸 United States
Insufficient data
6 Yellowstone National Park 🇺🇸 United States
Insufficient data
7 Channel Islands National Park 🇺🇸 United States
Insufficient data
8 Saguaro National Park 🇺🇸 United States
Insufficient data
9 Joshua Tree National Park 🇺🇸 United States
Insufficient data
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