California mammals

Long-eared Myotis in California

Myotis evotis

Native to California S3 Vulnerable in California

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

Long-eared Myotis in California, by the numbers

Occasional in California 138th most recorded of 241 mammals logged in California

413 occurrence records
93 with iNaturalist photos

Records from 2000–2026.

413 total records count every California occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 409 records with a full observation date.

When to look for the Long-eared Myotis in California

Most sightings fall in June to August.

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

Monthly California records (table)
MonthRecords
January6
February2
March4
April14
May39
June69
July110
August74
September58
October28
November4
December1

Monthly long-eared myotis occurrence records (iNaturalist and GBIF) in California, 2000–2026.

Seasonality

Year-round in California, with recorded sightings peaking in June–August.

Occurrence map

Where Long-eared Myotis has been recorded in California

300 records mapped · zoom and drag to explore

300 California records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Angeles National Forest 12
Big Basin Redwoods State Park 8
Cleveland National Forest 7
Redwood National Park 6
Cuyamaca Rancho State Park 5
Pinnacles National Park 3
Giant Sequoia National Monument 3
Yosemite National Park 2

Protected places with the most long-eared myotis 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 California

CountyRecords
San Bernardino County 51
San Diego County 38
Santa Cruz County 32
Napa County 19
Ventura County 14
Monterey County 14
Humboldt County 13
Sonoma County 13
San Benito County 11
Kern County 11
Mono County 10
Tulare County 10
33 other counties 177

The complete county distribution, spread across 45 California counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Long-eared Myotis records connect California’s feeding grounds with places suitable for daytime shelter. The Sierra Nevada, Coast Ranges, desert oases, and developed valleys create sharply different combinations of insects, flowers, caves, trees, and buildings.

Reports tend to gather near roads, towns, parks, and monitored roosts, while high ridges and open desert receive less nighttime coverage. California’s dry summers make water especially important, but records near ponds don’t establish how many bats use the surrounding landscape.

The California record set combines 93 research-grade community observations with 375 museum and survey records. Monthly patterns can also reflect weather and observer activity, so they shouldn’t be treated as a direct count of animals.

Occurrence data from iNaturalist and GBIF.

More mammals in California 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"