Chehalis

Ecosystem Overview

The Chehalis ecosystem supports 38 documented wildlife species across 37 taxonomic genera. Located in Lewis County, Washington, this area provides critical habitat with diverse natural communities. The location hosts 8 frequently observed species and 7 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. Compared to nearby Centralia, Chehalis hosts 12% more species diversity. This location ranks #2 for species diversity among 9 Lewis County County natural areas, placing it in the 78th 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

Regional Rank

Out of 9 locations

Species Distribution

Very Common8 species

Common12 species

Occasional11 species

Rare7 species

Regional Context

Regional Ranking

#2 of 9 locations

78th percentile for diversity

vs. Centralia

+12% 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 38 total documented species.

Spinus tristis

American goldfinch

Very Common3 obs.

Sturnus vulgaris

starling

Very Common3 obs.

Passer domesticus

House Sparrow

Very Common2 obs.

Pseudacris regilla

Pacific chorus frog

Very Common1 obs.

Euphagus cyanocephalus

Brewer's blackbird

Very Common1 obs.

Molothrus ater

Brown-headed Cowbird

Common1 obs.

Melospiza melodia

Song Sparrow

Common1 obs.

Zenaida macroura

Mourning Dove

Common1 obs.

Polystichum munitum

western sword fern

Common1 obs.

Thuja plicata

giant arborvitae

Common1 obs.

Abies grandis

Lowland Fir

Common1 obs.

Gaultheria shallon

shallal

Occasional1 obs.

Vaccinium parvifolium

red-huckleberry

Occasional1 obs.

Sambucus racemosa

red-berried elder

Occasional1 obs.

Geranium robertianum

herb-robert

Occasional1 obs.

Hydrophyllum tenuipes

Pacific waterleaf

Occasional1 obs.

Oemleria cerasiformis

Indian plum

Occasional1 obs.

Rubus ursinus

California blackberry

Rare1 obs.

Rubus laciniatus

cut-leaved bramble

Rare1 obs.

Prunus lusitanica

Portugal Laurel

Rare1 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 Chehalis. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

Species Count

+73%

vs. Regional Average

Compared to 8 nearby locations in Lewis County County, Washington

Nearby Natural Areas

Centralia

Importance: 0.41

34 species

+12% vs. current

Lewis County

Importance: 0.41

100 species

-62% vs. current

Snow Lake

Importance: 0.35

3 species

+1167% vs. current

Mossyrock

Importance: 0.29

1 species

+3700% vs. current

Winlock

Importance: 0.29

9 species

+322% vs. current

Morton

Importance: 0.29

4 species

+850% vs. current

Fords Prairie

Importance: 0.24

19 species

+100% vs. current

Mayfield Lake

Importance: 0.20

4 species

+850% 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 Lewis 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

+73%

vs. Regional Average

Compared to 8 nearby locations in Lewis County County, Washington

Nearby Natural Areas

Centralia

Importance: 0.41

34 species

+12% vs. current

Lewis County

Importance: 0.41

100 species

-62% vs. current

Snow Lake

Importance: 0.35

3 species

+1167% vs. current

Mossyrock

Importance: 0.29

1 species

+3700% vs. current

Winlock

Importance: 0.29

9 species

+322% vs. current

Morton

Importance: 0.29

4 species

+850% vs. current

Fords Prairie

Importance: 0.24

19 species

+100% vs. current

Mayfield Lake

Importance: 0.20

4 species

+850% 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

Regional Rank

Out of 9 locations

Species Distribution

Very Common8 species

Common12 species

Occasional11 species

Rare7 species

Regional Context

Regional Ranking

#2 of 9 locations

78th percentile for diversity

vs. Centralia

+12% species diversity

Most Common Species

Showing 20 most frequently observed species out of 38 total documented species.

Spinus tristis

American goldfinch

Very Common3 obs.

Sturnus vulgaris

starling

Very Common3 obs.

Passer domesticus

House Sparrow

Very Common2 obs.

Pseudacris regilla

Pacific chorus frog

Very Common1 obs.

Euphagus cyanocephalus

Brewer's blackbird

Very Common1 obs.

Molothrus ater

Brown-headed Cowbird

Common1 obs.

Melospiza melodia

Song Sparrow

Common1 obs.

Zenaida macroura

Mourning Dove

Common1 obs.

Polystichum munitum

western sword fern

Common1 obs.

Thuja plicata

giant arborvitae

Common1 obs.

Abies grandis

Lowland Fir

Common1 obs.

Gaultheria shallon

shallal

Occasional1 obs.

Vaccinium parvifolium

red-huckleberry

Occasional1 obs.

Sambucus racemosa

red-berried elder

Occasional1 obs.

Geranium robertianum

herb-robert

Occasional1 obs.

Hydrophyllum tenuipes

Pacific waterleaf

Occasional1 obs.

Oemleria cerasiformis

Indian plum

Occasional1 obs.

Rubus ursinus

California blackberry

Rare1 obs.

Rubus laciniatus

cut-leaved bramble

Rare1 obs.

Prunus lusitanica

Portugal Laurel

Rare1 obs.

Want the Complete Field Guide?

Get all 38 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.