Utah mammals

Silver-haired Bat in Utah

Lasionycteris noctivagans

Native to Utah S4B Apparently Secure in Utah

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

Silver-haired bat tucked into loose barkSilver-haired bat roosting against barkSilver-frosted back of a silver-haired batLive silver-haired bat perched on a rock face
Photo: Mark Richman · CC BY 4.0Silver-haired bat tucked into loose barkPhoto: David LaMagna · CC BY 4.0Silver-haired bat roosting against barkPhoto: David LaMagna · CC BY 4.0Silver-frosted back of a silver-haired batPhoto: Jeff Bartlett · CC BY 4.0Live silver-haired bat perched on a rock face

Silver-haired Bat in Utah, by the numbers

Occasional in Utah 81st most recorded of 141 mammals logged in Utah

267 occurrence records
62 with iNaturalist photos
Apr 21, 2026 Last seen in Utah

Records from 2000–2026.

267 total records count every Utah occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 265; the monthly chart covers the 265 records with a full observation date.

When to look for the Silver-haired Bat in Utah

Most sightings fall in May to June.

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

Monthly Utah records (table)
MonthRecords
January3
February0
March5
April16
May75
June57
July24
August39
September22
October19
November4
December1

Monthly silver-haired bat occurrence records (iNaturalist and GBIF) in Utah, 2000–2026.

Seasonality

Year-round in Utah, with recorded sightings peaking in May–June.

Occurrence map

Where Silver-haired Bat has been recorded in Utah

265 records mapped · zoom and drag to explore

265 Utah records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Capitol Reef National Park 11
Bears Ears National Monument 5
Bryce Canyon National Park 4
Cache National Forest 4
Dixie National Forest 3
Docs Pass Wilderness Area 3
K. E. Bullock State Wildlife Area 3
Fort Buenaventura State Park 1

Protected places with the most silver-haired 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 Utah

CountyRecords
Uintah County 46
Washington County 32
Utah County 21
Garfield County 18
Salt Lake County 17
Emery County 16
Wayne County 15
San Juan County 13
Millard County 12
Weber County 11
Duchesne County 10
Tooele County 9
14 other counties 47

The complete county distribution, spread across 26 Utah counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Utah’s silver-haired bat records concentrate in the state’s national forests, Uinta-Wasatch-Cache carrying the most reports, with smaller counts from Bryce Canyon, Zion, Capitol Reef, and Manti-La Sal. That fits a bat that roosts alone under loose bark in forested country rather than gathering in cave colonies with other species.

Sightings peak in May, with 75 records, well above June’s 57, a pattern that likely tracks spring migration through the state as much as it tracks true activity. iNaturalist contributes roughly a quarter of Utah’s 267 records, GBIF the rest.

NatureServe ranks it S4B, Apparently Secure, in its breeding range here, a healthier status than most of the state’s other bat species carry.

Occurrence data from iNaturalist and GBIF.

Silver-haired bat tucked into loose bark
Full species profile Silver-haired Bat Lasionycteris noctivagans Size 9.5–11.5 cm3.7–4.5 in Weight 11 g0.4 oz Lifespan 12 yr View the full profile

More mammals in Utah 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"