San Joaquin County

Ecosystem Overview

The San Joaquin County ecosystem supports 100 documented wildlife species across 89 taxonomic genera. Located in San Joaquin County, California, this area provides critical habitat with diverse natural communities. The location hosts 21 frequently observed species and 19 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. This location ranks #2 for species diversity among 15 San Joaquin County County natural areas, placing it in the 87th percentile for biodiversity.

Biodiversity Highlights

100

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 15 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#2 of 15 locations

87th percentile for diversity

vs. Stockton

0% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

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Most Common Species

Showing 20 most frequently observed species out of 100 total documented species.

Cygnus columbianus

whistling swan

Very Common69 obs.

Ardea alba

Great Egret

Very Common68 obs.

Branta hutchinsii

hutchins’s canada goose

Very Common63 obs.

Buteo jamaicensis

Red-tailed Hawk

Very Common42 obs.

Ardea herodias

Great Blue Heron

Very Common40 obs.

Egretta thula

Snowy Egret

Common38 obs.

Zonotrichia leucophrys

white-crowned sparrow

Common34 obs.

Pseudacris regilla

Pacific chorus frog

Common33 obs.

Falco sparverius

American Kestrel

Common33 obs.

Branta canadensis

Canada goose

Common29 obs.

Setophaga coronata

Myrtle Warbler

Common27 obs.

Haemorhous mexicanus

House Finch

Occasional26 obs.

Mimus polyglottos

Northern Mockingbird

Occasional24 obs.

Fulica americana

American Coot

Occasional23 obs.

Charadrius vociferus

Killdeer

Occasional23 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Occasional23 obs.

Zonotrichia atricapilla

Golden-crowned Sparrow

Occasional22 obs.

Anas platyrhynchos

mallard

Rare22 obs.

Limnodromus scolopaceus

Long-billed Dowitcher

Rare19 obs.

Lepomis macrochirus

Bluegill sunfish

Rare19 obs.

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Most Common Species

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Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in San Joaquin County. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

+170%

vs. Regional Average

Compared to 8 nearby locations in San Joaquin County County, California

Nearby Natural Areas

Stockton

Importance: 0.51

100 species

0% vs. current

Tracy

Importance: 0.39

35 species

+186% vs. current

Manteca

Importance: 0.37

2 species

+4900% vs. current

Lodi

Importance: 0.35

86 species

+16% vs. current

Pixey Slough

Importance: 0.35

58 species

+72% vs. current

Mosher Slough

Importance: 0.35

9 species

+1011% vs. current

Pixey Slough

Importance: 0.35

3 species

+3233% vs. current

San Joaquin River

Importance: 0.35

2 species

+4900% vs. current

About This Comparison

These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within San Joaquin County County.

Regional Comparison

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Regional Ranking

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Species Count

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vs. Regional Average

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Nearby Natural Areas

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About This Comparison

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Regional Comparison

Regional Ranking

100

Species Count

+170%

vs. Regional Average

Compared to 8 nearby locations in San Joaquin County County, California

Nearby Natural Areas

Stockton

Importance: 0.51

100 species

0% vs. current

Tracy

Importance: 0.39

35 species

+186% vs. current

Manteca

Importance: 0.37

2 species

+4900% vs. current

Lodi

Importance: 0.35

86 species

+16% vs. current

Pixey Slough

Importance: 0.35

58 species

+72% vs. current

Mosher Slough

Importance: 0.35

9 species

+1011% vs. current

Pixey Slough

Importance: 0.35

3 species

+3233% vs. current

San Joaquin River

Importance: 0.35

2 species

+4900% vs. current

About This Comparison

Ecosystem Overview

Biodiversity Highlights

100

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 15 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#2 of 15 locations

87th percentile for diversity

vs. Stockton

0% species diversity

Most Common Species

Showing 20 most frequently observed species out of 100 total documented species.

Cygnus columbianus

whistling swan

Very Common69 obs.

Ardea alba

Great Egret

Very Common68 obs.

Branta hutchinsii

hutchins’s canada goose

Very Common63 obs.

Buteo jamaicensis

Red-tailed Hawk

Very Common42 obs.

Ardea herodias

Great Blue Heron

Very Common40 obs.

Egretta thula

Snowy Egret

Common38 obs.

Zonotrichia leucophrys

white-crowned sparrow

Common34 obs.

Pseudacris regilla

Pacific chorus frog

Common33 obs.

Falco sparverius

American Kestrel

Common33 obs.

Branta canadensis

Canada goose

Common29 obs.

Setophaga coronata

Myrtle Warbler

Common27 obs.

Haemorhous mexicanus

House Finch

Occasional26 obs.

Mimus polyglottos

Northern Mockingbird

Occasional24 obs.

Fulica americana

American Coot

Occasional23 obs.

Charadrius vociferus

Killdeer

Occasional23 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Occasional23 obs.

Zonotrichia atricapilla

Golden-crowned Sparrow

Occasional22 obs.

Anas platyrhynchos

mallard

Rare22 obs.

Limnodromus scolopaceus

Long-billed Dowitcher

Rare19 obs.

Lepomis macrochirus

Bluegill sunfish

Rare19 obs.

Want the Complete Field Guide?

Get all 100 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.