San Mateo

Ecosystem Overview

The San Mateo ecosystem supports 100 documented wildlife species across 88 taxonomic genera. Located in San Mateo 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 #9 for species diversity among 28 San Mateo County County natural areas, placing it in the 68th 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 28 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#9 of 28 locations

68th percentile for diversity

vs. San Mateo County

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.

Egretta thula

Snowy Egret

Very Common51 obs.

Tringa semipalmata

Willet

Very Common37 obs.

Calidris minutilla

least sandpiper

Very Common36 obs.

Mareca americana

American Wigeon

Very Common32 obs.

Actitis macularius

spotted sandpiper

Very Common31 obs.

Anas platyrhynchos

mallard

Common31 obs.

Ruditapes philippinarum

Japanese littleneck

Common29 obs.

Sayornis nigricans

black phoebe

Common28 obs.

Bucephala albeola

Bufflehead

Common26 obs.

Pluvialis squatarola

grey plover

Common26 obs.

Sterna forsteri

forster’s tern

Common25 obs.

Fulica americana

American Coot

Occasional24 obs.

Corvus brachyrhynchos

American Crow

Occasional23 obs.

Setophaga coronata

Myrtle Warbler

Occasional22 obs.

Junco hyemalis

dark-eyed junco

Occasional22 obs.

Aythya marila

greater scaup

Occasional22 obs.

Artemisia californica

California sagebrush

Occasional21 obs.

Quercus agrifolia

Coast Live Oak

Rare21 obs.

Melanitta perspicillata

Surf Scoter

Rare21 obs.

Calypte anna

Anna's Hummingbird

Rare21 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 Mateo. Perfect for outdoor adventures, education, and nature exploration.

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Regional Comparison

Regional Ranking

100

Species Count

+4%

vs. Regional Average

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

Nearby Natural Areas

San Mateo County

Importance: 0.50

100 species

0% vs. current

Redwood City

Importance: 0.49

100 species

0% vs. current

Menlo Park

Importance: 0.46

100 species

0% vs. current

Daly City

Importance: 0.44

100 species

0% vs. current

Foster City

Importance: 0.43

100 species

0% vs. current

South San Francisco

Importance: 0.43

100 species

0% vs. current

San Carlos

Importance: 0.42

100 species

0% vs. current

East Palo Alto

Importance: 0.41

71 species

+41% 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 Mateo 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

+4%

vs. Regional Average

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

Nearby Natural Areas

San Mateo County

Importance: 0.50

100 species

0% vs. current

Redwood City

Importance: 0.49

100 species

0% vs. current

Menlo Park

Importance: 0.46

100 species

0% vs. current

Daly City

Importance: 0.44

100 species

0% vs. current

Foster City

Importance: 0.43

100 species

0% vs. current

South San Francisco

Importance: 0.43

100 species

0% vs. current

San Carlos

Importance: 0.42

100 species

0% vs. current

East Palo Alto

Importance: 0.41

71 species

+41% 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 28 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#9 of 28 locations

68th percentile for diversity

vs. San Mateo County

0% species diversity

Most Common Species

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

Egretta thula

Snowy Egret

Very Common51 obs.

Tringa semipalmata

Willet

Very Common37 obs.

Calidris minutilla

least sandpiper

Very Common36 obs.

Mareca americana

American Wigeon

Very Common32 obs.

Actitis macularius

spotted sandpiper

Very Common31 obs.

Anas platyrhynchos

mallard

Common31 obs.

Ruditapes philippinarum

Japanese littleneck

Common29 obs.

Sayornis nigricans

black phoebe

Common28 obs.

Bucephala albeola

Bufflehead

Common26 obs.

Pluvialis squatarola

grey plover

Common26 obs.

Sterna forsteri

forster’s tern

Common25 obs.

Fulica americana

American Coot

Occasional24 obs.

Corvus brachyrhynchos

American Crow

Occasional23 obs.

Setophaga coronata

Myrtle Warbler

Occasional22 obs.

Junco hyemalis

dark-eyed junco

Occasional22 obs.

Aythya marila

greater scaup

Occasional22 obs.

Artemisia californica

California sagebrush

Occasional21 obs.

Quercus agrifolia

Coast Live Oak

Rare21 obs.

Melanitta perspicillata

Surf Scoter

Rare21 obs.

Calypte anna

Anna's Hummingbird

Rare21 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.