Hillsboro

Ecosystem Overview

The Hillsboro ecosystem supports 100 documented wildlife species across 88 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 #2 for species diversity among 16 Washington County County natural areas, placing it in the 88th 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

#2 of 16 locations

88th percentile for diversity

vs. Beaverton

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.

Branta canadensis

Canada goose

Very Common29 obs.

Euphagus cyanocephalus

Brewer's blackbird

Very Common26 obs.

Corvus brachyrhynchos

American Crow

Very Common22 obs.

Branta hutchinsii

hutchins’s canada goose

Very Common21 obs.

Anas platyrhynchos

mallard

Very Common20 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Common18 obs.

Junco hyemalis

dark-eyed junco

Common18 obs.

Turdus migratorius

American Robin

Common17 obs.

Buteo jamaicensis

Red-tailed Hawk

Common14 obs.

Ardea alba

Great Egret

Common14 obs.

Zonotrichia atricapilla

Golden-crowned Sparrow

Common14 obs.

Quercus garryana

Oregon White Oak

Occasional14 obs.

Bucephala albeola

Bufflehead

Occasional14 obs.

Sciurus carolinensis

Grey squirrel

Occasional13 obs.

Mareca americana

American Wigeon

Occasional12 obs.

Melanerpes formicivorus

Acorn Woodpecker

Occasional12 obs.

Aix sponsa

wood duck

Occasional11 obs.

Evernia prunastri

Oak Moss

Rare11 obs.

Melospiza melodia

Song Sparrow

Rare11 obs.

Stropharia ambigua

Rare10 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 Hillsboro. 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

Beaverton

Importance: 0.45

100 species

0% vs. current

Washington County

Importance: 0.43

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

Oak Island Marsh

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

Beaverton

Importance: 0.45

100 species

0% vs. current

Washington County

Importance: 0.43

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

Oak Island Marsh

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

#2 of 16 locations

88th percentile for diversity

vs. Beaverton

0% species diversity

Most Common Species

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

Branta canadensis

Canada goose

Very Common29 obs.

Euphagus cyanocephalus

Brewer's blackbird

Very Common26 obs.

Corvus brachyrhynchos

American Crow

Very Common22 obs.

Branta hutchinsii

hutchins’s canada goose

Very Common21 obs.

Anas platyrhynchos

mallard

Very Common20 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Common18 obs.

Junco hyemalis

dark-eyed junco

Common18 obs.

Turdus migratorius

American Robin

Common17 obs.

Buteo jamaicensis

Red-tailed Hawk

Common14 obs.

Ardea alba

Great Egret

Common14 obs.

Zonotrichia atricapilla

Golden-crowned Sparrow

Common14 obs.

Quercus garryana

Oregon White Oak

Occasional14 obs.

Bucephala albeola

Bufflehead

Occasional14 obs.

Sciurus carolinensis

Grey squirrel

Occasional13 obs.

Mareca americana

American Wigeon

Occasional12 obs.

Melanerpes formicivorus

Acorn Woodpecker

Occasional12 obs.

Aix sponsa

wood duck

Occasional11 obs.

Evernia prunastri

Oak Moss

Rare11 obs.

Melospiza melodia

Song Sparrow

Rare11 obs.

Stropharia ambigua

Rare10 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.