Oregon mammals

Long-eared Myotis in Oregon

Myotis evotis

Native to Oregon S4 Apparently Secure in Oregon

Not listed as nonindigenous in Oregon by USGS NAS; native to its Oregon 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 Oregon, by the numbers

Occasional in Oregon 116th most recorded of 178 mammals logged in Oregon

278 occurrence records
22 with iNaturalist photos
Jul 16, 2025 Last seen in Oregon

Records from 2000–2026.

278 total records count every Oregon occurrence from GBIF and iNaturalist; the monthly chart covers the 276 records with a full observation date.

When to look for the Long-eared Myotis in Oregon

Most sightings fall in August.

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

Monthly Oregon records (table)
MonthRecords
January0
February4
March0
April0
May5
June10
July54
August175
September22
October3
November1
December2

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

Seasonality

Year-round in Oregon, with recorded sightings peaking in August.

Occurrence map

Where Long-eared Myotis has been recorded in Oregon

278 records mapped · zoom and drag to explore

278 Oregon records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Oregon Caves National Monument and Preserve 5
Umatilla National Forest 2
Steens Mountain Wilderness Area 2
Newberry National Volcanic Monument 1
Crater Lake National Park 1
Eagle Cap Wilderness 1
Siuslaw National Forest 1

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 Oregon

CountyRecords
Wallowa County 113
Lincoln County 31
Union County 21
Jefferson County 17
Lake County 11
Benton County 9
Jackson County 8
Malheur County 8
Linn County 6
Josephine County 6
Clackamas County 6
Clatsop County 5
18 other counties 37

The complete county distribution, spread across 30 Oregon counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Long-eared myotis carry noticeably larger ears than most of Oregon’s other small brown bats, an adaptation that helps them pick up faint echoes while hunting moths and beetles low over forest understory. Records split evenly between the Deschutes National Forest’s volcanic terrain and the Wallowa-Whitman National Forest’s dry eastern-Oregon canyons, showing this bat uses forest types on both sides of the Cascades.

Records concentrate almost entirely in July, ten times any other month, tracking peak summer maternity-roost activity when females and young are most active on the wing. NatureServe ranks the species S4, apparently secure, in Oregon, and its record relies mostly on GBIF specimen data over photographs, a fair reflection of a bat that’s active well after dark.

Occurrence data from iNaturalist and GBIF.

More mammals in Oregon 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"