Pleasant Hill

Ecosystem Overview

The Pleasant Hill ecosystem supports 75 documented wildlife species across 66 taxonomic genera. Located in Contra Costa County, California, this area provides critical habitat with diverse natural communities. The location hosts 16 frequently observed species and 14 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Contra Costa County nearby has 25% more documented species, Pleasant Hill offers unique wildlife observation opportunities. This location ranks #13 for species diversity among 45 Contra Costa County County natural areas, placing it in the 71th percentile for biodiversity.

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#13

Regional Rank

Out of 45 locations

Species Distribution

Very Common16 species

Common22 species

Occasional23 species

Rare14 species

Regional Context

Regional Ranking

#13 of 45 locations

71th percentile for diversity

vs. Contra Costa County

-25% 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 75 total documented species.

Lophodytes cucullatus

Hooded Merganser

Very Common48 obs.

Ardea alba

Great Egret

Very Common37 obs.

Egretta thula

Snowy Egret

Very Common16 obs.

Anas platyrhynchos

mallard

Very Common15 obs.

Buteo jamaicensis

Red-tailed Hawk

Very Common13 obs.

Ardea herodias

Great Blue Heron

Common11 obs.

Sayornis nigricans

black phoebe

Common10 obs.

Branta canadensis

Canada goose

Common10 obs.

Setophaga coronata

Myrtle Warbler

Common8 obs.

Megaceryle alcyon

Belted Kingfisher

Common7 obs.

Aphelocoma californica

California/Woodhouse's Scrub-Jay

Common6 obs.

Sialia mexicana

Western Bluebird

Occasional6 obs.

Buteo lineatus

Red-Shouldered/Broad-Winged Hawk

Occasional4 obs.

Trachemys scripta

slider turtle, red-eared terrapin, red-eared slider

Occasional4 obs.

Spinus psaltria

lesser goldfinch

Occasional4 obs.

Lontra canadensis

River Otter

Occasional4 obs.

Bombycilla cedrorum

cedar waxwing

Occasional3 obs.

Cathartes aura

Turkey Vulture

Rare3 obs.

Calypte anna

Anna's Hummingbird

Rare3 obs.

Cynips douglasi

Rare3 obs.

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Most Common Species

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

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Regional Comparison

Regional Ranking

Species Count

-9%

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

-25% vs. current

Richmond

Importance: 0.49

100 species

-25% vs. current

Concord

Importance: 0.46

100 species

-25% vs. current

Walnut Creek

Importance: 0.45

100 species

-25% vs. current

Antioch

Importance: 0.44

100 species

-25% vs. current

Moraga

Importance: 0.43

47 species

+60% vs. current

Orinda

Importance: 0.43

100 species

-25% vs. current

Pittsburg

Importance: 0.43

11 species

+582% 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

Species Count

-9%

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

-25% vs. current

Richmond

Importance: 0.49

100 species

-25% vs. current

Concord

Importance: 0.46

100 species

-25% vs. current

Walnut Creek

Importance: 0.45

100 species

-25% vs. current

Antioch

Importance: 0.44

100 species

-25% vs. current

Moraga

Importance: 0.43

47 species

+60% vs. current

Orinda

Importance: 0.43

100 species

-25% vs. current

Pittsburg

Importance: 0.43

11 species

+582% vs. current

About This Comparison

Ecosystem Overview

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#13

Regional Rank

Out of 45 locations

Species Distribution

Very Common16 species

Common22 species

Occasional23 species

Rare14 species

Regional Context

Regional Ranking

#13 of 45 locations

71th percentile for diversity

vs. Contra Costa County

-25% species diversity

Most Common Species

Showing 20 most frequently observed species out of 75 total documented species.

Lophodytes cucullatus

Hooded Merganser

Very Common48 obs.

Ardea alba

Great Egret

Very Common37 obs.

Egretta thula

Snowy Egret

Very Common16 obs.

Anas platyrhynchos

mallard

Very Common15 obs.

Buteo jamaicensis

Red-tailed Hawk

Very Common13 obs.

Ardea herodias

Great Blue Heron

Common11 obs.

Sayornis nigricans

black phoebe

Common10 obs.

Branta canadensis

Canada goose

Common10 obs.

Setophaga coronata

Myrtle Warbler

Common8 obs.

Megaceryle alcyon

Belted Kingfisher

Common7 obs.

Aphelocoma californica

California/Woodhouse's Scrub-Jay

Common6 obs.

Sialia mexicana

Western Bluebird

Occasional6 obs.

Buteo lineatus

Red-Shouldered/Broad-Winged Hawk

Occasional4 obs.

Trachemys scripta

slider turtle, red-eared terrapin, red-eared slider

Occasional4 obs.

Spinus psaltria

lesser goldfinch

Occasional4 obs.

Lontra canadensis

River Otter

Occasional4 obs.

Bombycilla cedrorum

cedar waxwing

Occasional3 obs.

Cathartes aura

Turkey Vulture

Rare3 obs.

Calypte anna

Anna's Hummingbird

Rare3 obs.

Cynips douglasi

Rare3 obs.

Want the Complete Field Guide?

Get all 75 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.