California mammals

Pacific Marten in California

Martes caurina

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

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Pacific Marten in California, by the numbers

Occasional in California 131st most recorded of 241 mammals logged in California

141 occurrence records
141 with iNaturalist photos

Records from 2000–2026.

When to look for the Pacific Marten in California

Most sightings fall in June to September.

141 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
February7
March5
April3
May7
June19
July18
August28
September24
October13
November7
December4

Monthly pacific marten occurrence records (iNaturalist and GBIF) in California, 2000–2026.

Seasonality

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

Occurrence map

Where Pacific Marten has been recorded in California

141 records mapped · zoom and drag to explore

141 California records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Yosemite National Park 14
Lassen Volcanic National Park 6
Sequoia National Park 3
Kings Canyon National Park 3
Carson-Iceberg Wilderness 2
John Muir Wilderness 2
Trinity Alps Wilderness 1
Devils Postpile National Monument 1

Protected places with the most pacific marten 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
Tuolumne County 20
Fresno County 15
Tulare County 14
Shasta County 11
Placer County 8
Mono County 7
Siskiyou County 6
Madera County 6
Alpine County 6
Lassen County 6
Nevada County 5
Humboldt County 5
9 other counties 32

The complete county distribution, spread across 21 California counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

California’s combined state files contain 229 Pacific Marten records: 141 from iNaturalist and 88 from GBIF. It ranks 131th among 243 mammals in this California record comparison, placing it in the middle third. That’s a ranking of submitted records, not a head count of animals.

The monthly series reaches its high point in August, with 14 records in the busiest month. Records appear in 12 of 12 months, so the pattern shows when sightings were documented, not when the species must be present or absent.

California accounts for about 11% of the mapped GBIF records summarized on the national Pacific Marten page. That’s a modest share of the known record footprint, though differences in survey effort can strongly shape the percentage.

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"