Arizona mammals

Canyon Bat in Arizona

Parastrellus hesperus

Native to Arizona S5 Secure in Arizona

Not listed as nonindigenous in Arizona by USGS NAS; native to its Arizona range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Canyon Bat in Arizona, by the numbers

Occasional in Arizona 55th most recorded of 158 mammals logged in Arizona

225 occurrence records
204 with iNaturalist photos

Records from 2000–2026.

225 total records count every Arizona occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 220; the monthly chart covers the 220 records with a full observation date.

When to look for the Canyon Bat in Arizona

Most sightings fall in June to October.

220 Arizona occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Arizona records (table)
MonthRecords
January0
February2
March6
April24
May22
June33
July35
August37
September34
October23
November2
December2

Monthly canyon bat occurrence records (iNaturalist and GBIF) in Arizona, 2000–2026.

Seasonality

Year-round in Arizona, with recorded sightings peaking in June–October, with a smaller rise in April.

Occurrence map

Where Canyon Bat has been recorded in Arizona

220 records mapped · zoom and drag to explore

220 Arizona records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Grand Canyon National Park 11
Agua Fria National Monument 5
Organ Pipe Cactus National Monument 4
Saguaro National Park 4
Chiricahua National Monument 3
Petrified Forest National Park 3
Pusch Ridge Wilderness 2
Santa Rita Mountains 1

Protected places with the most canyon bat sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Arizona

CountyRecords
Pima County 105
Maricopa County 35
Coconino County 16
Yavapai County 15
Mohave County 13
Cochise County 13
Yuma County 6
Santa Cruz County 6
La Paz County 3
Apache County 3
Pinal County 3
Gila County 2
Other localities 5

The complete county distribution, spread across 12 Arizona counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The canyon bat is the smallest bat in the United States and, unusually for a bat, one you have a real chance of seeing. Open occurrence databases hold 225 records for it in Arizona, and 204 of those are iNaturalist photos, a far larger share than its secretive relatives manage, because this tiny bat takes wing while there is still light in the sky.

An early flier of canyon country

Once called the western pipistrelle, the canyon bat weighs only a few grams and flutters on slow, moth-like wingbeats over desert washes, canyon mouths, and rocky slopes. It emerges well before full dark and lingers after dawn, so hikers and photographers actually catch it on the wing. It roosts in rock crevices and cliffs across the state, and its records spread widely, from Pima and Cochise counties in the south to Coconino County and the Grand Canyon in the north.

Common and widely recorded

Sightings build through the warmer months and taper in winter as the bat drops into torpor within its crevices. Unlike the vulnerable myotis it shares the desert with, the canyon bat is ranked S5, secure, in Arizona. Its early-evening habits make it one of the few small bats the public regularly manages to document.

Common questions

Why is such a small bat so often photographed? Because it flies early. Catching the last daylight, the canyon bat is out and visible when most other bats are still roosting, so people see and photograph it far more than its size would suggest.

More mammals in Arizona in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"