San Dimas

Ecosystem Overview

The San Dimas ecosystem supports 100 documented wildlife species across 91 taxonomic genera. Located in Los Angeles 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 132 Los Angeles County County natural areas, placing it in the 93th 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 132 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#9 of 132 locations

93th percentile for diversity

vs. Pasadena

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.

Oxyura jamaicensis

Ruddy Duck

Very Common15 obs.

Fulica americana

American Coot

Very Common12 obs.

Larus delawarensis

Ring-billed Gull

Very Common12 obs.

Larus californicus

California Gull

Very Common11 obs.

Aechmophorus clarkii

Clark's Grebe

Very Common10 obs.

Eriogonum fasciculatum

wild buckwheat

Common8 obs.

Aechmophorus occidentalis

Western Grebe

Common8 obs.

Sialia mexicana

Western Bluebird

Common7 obs.

Marrubium vulgare

white horehound

Common6 obs.

Anas platyrhynchos

mallard

Common6 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Common6 obs.

Branta canadensis

Canada goose

Occasional5 obs.

Actitis macularius

spotted sandpiper

Occasional5 obs.

Ardea alba

Great Egret

Occasional5 obs.

Buteo jamaicensis

Red-tailed Hawk

Occasional4 obs.

Charadrius vociferus

Killdeer

Occasional4 obs.

Egretta thula

Snowy Egret

Occasional3 obs.

Selasphorus sasin

Allen's Hummingbird

Rare3 obs.

Calypte anna

Anna's Hummingbird

Rare3 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Rare3 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 Dimas. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

+12%

vs. Regional Average

Compared to 8 nearby locations in Los Angeles County County, California

Nearby Natural Areas

Pasadena

Importance: 0.58

100 species

0% vs. current

Long Beach

Importance: 0.57

100 species

0% vs. current

Santa Monica

Importance: 0.55

100 species

0% vs. current

Burbank

Importance: 0.53

100 species

0% vs. current

Los Angeles County

Importance: 0.53

100 species

0% vs. current

Beverly Hills

Importance: 0.52

15 species

+567% vs. current

Glendale

Importance: 0.52

100 species

0% vs. current

Malibu

Importance: 0.52

100 species

0% 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 Los Angeles 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

+12%

vs. Regional Average

Compared to 8 nearby locations in Los Angeles County County, California

Nearby Natural Areas

Pasadena

Importance: 0.58

100 species

0% vs. current

Long Beach

Importance: 0.57

100 species

0% vs. current

Santa Monica

Importance: 0.55

100 species

0% vs. current

Burbank

Importance: 0.53

100 species

0% vs. current

Los Angeles County

Importance: 0.53

100 species

0% vs. current

Beverly Hills

Importance: 0.52

15 species

+567% vs. current

Glendale

Importance: 0.52

100 species

0% vs. current

Malibu

Importance: 0.52

100 species

0% 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 132 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#9 of 132 locations

93th percentile for diversity

vs. Pasadena

0% species diversity

Most Common Species

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

Oxyura jamaicensis

Ruddy Duck

Very Common15 obs.

Fulica americana

American Coot

Very Common12 obs.

Larus delawarensis

Ring-billed Gull

Very Common12 obs.

Larus californicus

California Gull

Very Common11 obs.

Aechmophorus clarkii

Clark's Grebe

Very Common10 obs.

Eriogonum fasciculatum

wild buckwheat

Common8 obs.

Aechmophorus occidentalis

Western Grebe

Common8 obs.

Sialia mexicana

Western Bluebird

Common7 obs.

Marrubium vulgare

white horehound

Common6 obs.

Anas platyrhynchos

mallard

Common6 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Common6 obs.

Branta canadensis

Canada goose

Occasional5 obs.

Actitis macularius

spotted sandpiper

Occasional5 obs.

Ardea alba

Great Egret

Occasional5 obs.

Buteo jamaicensis

Red-tailed Hawk

Occasional4 obs.

Charadrius vociferus

Killdeer

Occasional4 obs.

Egretta thula

Snowy Egret

Occasional3 obs.

Selasphorus sasin

Allen's Hummingbird

Rare3 obs.

Calypte anna

Anna's Hummingbird

Rare3 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Rare3 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.