Washington County

Ecosystem Overview

The Washington County ecosystem supports 100 documented wildlife species across 85 taxonomic genera. Located in Washington County, Oregon, 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 #4 for species diversity among 16 Washington County County natural areas, placing it in the 75th 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 16 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#4 of 16 locations

75th percentile for diversity

vs. Hillsboro

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.

Junco hyemalis

dark-eyed junco

Very Common204 obs.

Anas platyrhynchos

mallard

Very Common122 obs.

Corvus brachyrhynchos

American Crow

Very Common113 obs.

Calypte anna

Anna's Hummingbird

Very Common98 obs.

Haemorhous mexicanus

House Finch

Very Common97 obs.

Turdus migratorius

American Robin

Common90 obs.

Branta canadensis

Canada goose

Common88 obs.

Sciurus carolinensis

Grey squirrel

Common79 obs.

Zenaida macroura

Mourning Dove

Common75 obs.

Melospiza melodia

Song Sparrow

Common72 obs.

Spinus psaltria

lesser goldfinch

Common71 obs.

Spinus tristis

American goldfinch

Occasional66 obs.

Ardea herodias

Great Blue Heron

Occasional66 obs.

Buteo jamaicensis

Red-tailed Hawk

Occasional56 obs.

Poecile atricapillus

Black-capped chickadee

Occasional54 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Occasional51 obs.

Myocastor coypus

Coypu, Nutria

Occasional46 obs.

Ardea alba

Great Egret

Rare46 obs.

Evernia prunastri

Oak Moss

Rare44 obs.

Aphelocoma californica

California/Woodhouse's Scrub-Jay

Rare43 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 Washington County. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

+72%

vs. Regional Average

Compared to 8 nearby locations in Washington County County, Oregon

Nearby Natural Areas

Hillsboro

Importance: 0.46

100 species

0% vs. current

Beaverton

Importance: 0.45

100 species

0% vs. current

Tigard

Importance: 0.42

100 species

0% vs. current

Forest Grove

Importance: 0.38

100 species

0% vs. current

Commonwealth Lake

Importance: 0.35

33 species

+203% vs. current

Wapato Marsh

Importance: 0.35

19 species

+426% vs. current

Bethany Lake

Importance: 0.35

9 species

+1011% vs. current

Northwest Pond

Importance: 0.35

3 species

+3233% 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 Washington 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

+72%

vs. Regional Average

Compared to 8 nearby locations in Washington County County, Oregon

Nearby Natural Areas

Hillsboro

Importance: 0.46

100 species

0% vs. current

Beaverton

Importance: 0.45

100 species

0% vs. current

Tigard

Importance: 0.42

100 species

0% vs. current

Forest Grove

Importance: 0.38

100 species

0% vs. current

Commonwealth Lake

Importance: 0.35

33 species

+203% vs. current

Wapato Marsh

Importance: 0.35

19 species

+426% vs. current

Bethany Lake

Importance: 0.35

9 species

+1011% vs. current

Northwest Pond

Importance: 0.35

3 species

+3233% 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 16 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#4 of 16 locations

75th percentile for diversity

vs. Hillsboro

0% species diversity

Most Common Species

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

Junco hyemalis

dark-eyed junco

Very Common204 obs.

Anas platyrhynchos

mallard

Very Common122 obs.

Corvus brachyrhynchos

American Crow

Very Common113 obs.

Calypte anna

Anna's Hummingbird

Very Common98 obs.

Haemorhous mexicanus

House Finch

Very Common97 obs.

Turdus migratorius

American Robin

Common90 obs.

Branta canadensis

Canada goose

Common88 obs.

Sciurus carolinensis

Grey squirrel

Common79 obs.

Zenaida macroura

Mourning Dove

Common75 obs.

Melospiza melodia

Song Sparrow

Common72 obs.

Spinus psaltria

lesser goldfinch

Common71 obs.

Spinus tristis

American goldfinch

Occasional66 obs.

Ardea herodias

Great Blue Heron

Occasional66 obs.

Buteo jamaicensis

Red-tailed Hawk

Occasional56 obs.

Poecile atricapillus

Black-capped chickadee

Occasional54 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Occasional51 obs.

Myocastor coypus

Coypu, Nutria

Occasional46 obs.

Ardea alba

Great Egret

Rare46 obs.

Evernia prunastri

Oak Moss

Rare44 obs.

Aphelocoma californica

California/Woodhouse's Scrub-Jay

Rare43 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.