Concord

Ecosystem Overview

The Concord ecosystem supports 100 documented wildlife species across 87 taxonomic genera. Located in Contra Costa 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 #11 for species diversity among 45 Contra Costa County County natural areas, placing it in the 76th 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

#11

Regional Rank

Out of 45 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#11 of 45 locations

76th percentile for diversity

vs. Contra Costa 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.

Buteo jamaicensis

Red-tailed Hawk

Very Common28 obs.

Aix sponsa

wood duck

Very Common25 obs.

Zonotrichia leucophrys

white-crowned sparrow

Very Common24 obs.

Lophodytes cucullatus

Hooded Merganser

Very Common19 obs.

Setophaga coronata

Myrtle Warbler

Very Common19 obs.

Aphelocoma californica

California/Woodhouse's Scrub-Jay

Common18 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Common16 obs.

Anas platyrhynchos

mallard

Common16 obs.

Cathartes aura

Turkey Vulture

Common16 obs.

Branta canadensis

Canada goose

Common14 obs.

Calypte anna

Anna's Hummingbird

Common13 obs.

Colaptes auratus

common flicker

Occasional13 obs.

Butorides virescens

green heron

Occasional12 obs.

Spinus psaltria

lesser goldfinch

Occasional12 obs.

Psaltriparus minimus

American Bushtit

Occasional12 obs.

Sialia mexicana

Western Bluebird

Occasional11 obs.

Ardea alba

Great Egret

Occasional11 obs.

Aesculus californica

California buckeye

Rare11 obs.

Sayornis nigricans

black phoebe

Rare10 obs.

Zenaida macroura

Mourning Dove

Rare9 obs.

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Most Common Species

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

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Regional Comparison

Regional Ranking

100

Species Count

+22%

vs. Regional Average

Compared to 8 nearby locations in Contra Costa County County, California

Nearby Natural Areas

Contra Costa County

Importance: 0.49

100 species

0% vs. current

Richmond

Importance: 0.49

100 species

0% vs. current

Walnut Creek

Importance: 0.45

100 species

0% vs. current

Antioch

Importance: 0.44

100 species

0% vs. current

Moraga

Importance: 0.43

47 species

+113% vs. current

Orinda

Importance: 0.43

100 species

0% vs. current

Pittsburg

Importance: 0.43

11 species

+809% vs. current

Danville

Importance: 0.43

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 Contra Costa 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

+22%

vs. Regional Average

Compared to 8 nearby locations in Contra Costa County County, California

Nearby Natural Areas

Contra Costa County

Importance: 0.49

100 species

0% vs. current

Richmond

Importance: 0.49

100 species

0% vs. current

Walnut Creek

Importance: 0.45

100 species

0% vs. current

Antioch

Importance: 0.44

100 species

0% vs. current

Moraga

Importance: 0.43

47 species

+113% vs. current

Orinda

Importance: 0.43

100 species

0% vs. current

Pittsburg

Importance: 0.43

11 species

+809% vs. current

Danville

Importance: 0.43

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

#11

Regional Rank

Out of 45 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#11 of 45 locations

76th percentile for diversity

vs. Contra Costa County

0% species diversity

Most Common Species

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

Buteo jamaicensis

Red-tailed Hawk

Very Common28 obs.

Aix sponsa

wood duck

Very Common25 obs.

Zonotrichia leucophrys

white-crowned sparrow

Very Common24 obs.

Lophodytes cucullatus

Hooded Merganser

Very Common19 obs.

Setophaga coronata

Myrtle Warbler

Very Common19 obs.

Aphelocoma californica

California/Woodhouse's Scrub-Jay

Common18 obs.

Sceloporus occidentalis

Pacific blue-bellied lizard

Common16 obs.

Anas platyrhynchos

mallard

Common16 obs.

Cathartes aura

Turkey Vulture

Common16 obs.

Branta canadensis

Canada goose

Common14 obs.

Calypte anna

Anna's Hummingbird

Common13 obs.

Colaptes auratus

common flicker

Occasional13 obs.

Butorides virescens

green heron

Occasional12 obs.

Spinus psaltria

lesser goldfinch

Occasional12 obs.

Psaltriparus minimus

American Bushtit

Occasional12 obs.

Sialia mexicana

Western Bluebird

Occasional11 obs.

Ardea alba

Great Egret

Occasional11 obs.

Aesculus californica

California buckeye

Rare11 obs.

Sayornis nigricans

black phoebe

Rare10 obs.

Zenaida macroura

Mourning Dove

Rare9 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.