California, US

State

48173 species observed across 8 groups · Pop. 39.5M

Ecoregions

Species observed

Increased Seasonal Activity

Currently Flowering

Birds· 1168 species

Mammals· 431 species

Plants· 15502 species

Reptiles & Amphibians· 502 species

Fish· 1025 species

Insects· 17892 species

Other Invertebrates· 4509 species

Fungi & Lichens· 7144 species

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Counties in California

Alameda County, CAPop. 1.7MAlpine County, CAPop. 1.2KAmador County, CAPop. 40.5KButte County, CAPop. 210.2KCalaveras County, CAPop. 45.3KColusa County, CAPop. 21.9KContra Costa County, CAPop. 1.2MDel Norte County, CAPop. 27.6KEl Dorado County, CAPop. 191.2KFresno County, CAPop. 1.0MGlenn County, CAPop. 28.9KHumboldt County, CAPop. 136.3KImperial County, CAPop. 179.6KInyo County, CAPop. 19.0KKern County, CAPop. 905.9KKings County, CAPop. 152.8KLake County, CAPop. 68.2KLassen County, CAPop. 32.3KLos Angeles County, CAPop. 10.0MMadera County, CAPop. 156.3KMarin County, CAPop. 261.3KMariposa County, CAPop. 17.1KMendocino County, CAPop. 91.4KMerced County, CAPop. 281.8KModoc County, CAPop. 8.7KMono County, CAPop. 13.2KMonterey County, CAPop. 438.3KNapa County, CAPop. 137.5KNevada County, CAPop. 102.3KOrange County, CAPop. 3.2MPlacer County, CAPop. 405.9KPlumas County, CAPop. 19.7KRiverside County, CAPop. 2.4MSacramento County, CAPop. 1.6MSan Benito County, CAPop. 64.5KSan Bernardino County, CAPop. 2.2MSan Diego County, CAPop. 3.3MSan Francisco County, CAPop. 870.5KSan Joaquin County, CAPop. 780.6KSan Luis Obispo County, CAPop. 281.9KSan Mateo County, CAPop. 762.5KSanta Barbara County, CAPop. 448.4KSanta Clara County, CAPop. 1.9MSanta Cruz County, CAPop. 270.5KShasta County, CAPop. 182.0KSierra County, CAPop. 3.2KSiskiyou County, CAPop. 44.0KSolano County, CAPop. 452.7KSonoma County, CAPop. 488.3KStanislaus County, CAPop. 553.3KSutter County, CAPop. 99.5KTehama County, CAPop. 65.7KTrinity County, CAPop. 16.1KTulare County, CAPop. 473.9KTuolumne County, CAPop. 55.4KVentura County, CAPop. 843.4KYolo County, CAPop. 216.3KYuba County, CAPop. 82.0K