California mammals

Brush Rabbit in California

Sylvilagus bachmani

Native to California SNR Unranked 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.

Brush Rabbit in California, by the numbers

Common in California 19th most recorded of 241 mammals logged in California

10,199 occurrence records
9,263 with iNaturalist photos

Records from 2000–2026.

10,199 total records count every California occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 10,184 records with a full observation date.

When to look for the Brush Rabbit in California

Most sightings fall in March to July.

10,184 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
January657
February620
March864
April1,178
May1,391
June1,337
July1,049
August702
September670
October690
November536
December490

Monthly brush rabbit occurrence records (iNaturalist and GBIF) in California, 2000–2026.

Seasonality

Year-round in California, with recorded sightings peaking in March–July.

Occurrence map

Where Brush Rabbit 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
Golden Gate National Recreation Area 495
Younger Lagoon Reserve 429
Point Reyes National Seashore 332
Santa Monica Mountains National Recreation Area 152
Wilder Ranch State Park 127
Natural Bridges State Beach 111
Burleigh H. Murray Ranch 104
Phillip Burton Wilderness Area 100

Protected places with the most brush rabbit 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 Mateo County 1,880
Santa Cruz County 1,448
Santa Clara County 966
Monterey County 747
Marin County 681
Santa Barbara County 541
Contra Costa County 511
San Diego County 462
San Luis Obispo County 449
Humboldt County 443
Los Angeles County 404
Alameda County 271
37 other counties 1,396

The complete county distribution, spread across 49 California counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The brush rabbit’s California record, 10,199 sightings across 49 counties, draws a nearly unbroken line down the state’s coastal spine. San Mateo County leads with 1,880 records and Santa Cruz follows with 1,448, with heavy counts in Santa Clara, Monterey, and Marin and a long tail reaching from Humboldt in the north to San Diego at the border.

A rabbit that never leaves cover

Brush rabbits are small, dark cottontails that live their whole lives inside dense, low growth: chaparral, coastal scrub, blackberry tangles, and brushy field edges. Unlike jackrabbits they never dash across open ground; pressed, they slip a few body lengths into the thicket and freeze. That habit shapes where they are found. The Golden Gate National Recreation Area, Point Reyes National Seashore, Santa Monica Mountains National Recreation Area, and the Younger Lagoon Reserve all hold thick records on exactly this kind of overgrown edge.

A long, mild breeding season

Along California’s fog-cooled coast the growing season barely pauses, and brush rabbits breed through much of it, raising several small litters in nests hidden under brush. Records build through spring to a May and June crest, when young rabbits are out feeding at the edges of cover in the long evenings, then ease slowly through the dry half of the year without ever going quiet.

Status in California

NatureServe has not ranked the brush rabbit at the state or global level (SNR and GNR), and it is not specifically listed under California’s conservation framework. The species is native to the state, and coastal California holds the heart of its narrow Pacific range.

Occurrence data from iNaturalist and GBIF.

Brush Rabbit in other states

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"