Sylvan-highlands

Ecosystem Overview

The Sylvan-highlands ecosystem supports 97 documented wildlife species across 88 taxonomic genera. Located in Multnomah County, Oregon, this area provides critical habitat with diverse natural communities. The location hosts 20 frequently observed species and 19 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Multnomah County nearby has 3% more documented species, Sylvan-highlands offers unique wildlife observation opportunities. This location ranks #2 for species diversity among 21 Multnomah County County natural areas, placing it in the 90th 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 21 locations

Species Distribution

Very Common20 species

Common29 species

Occasional29 species

Rare19 species

Regional Context

Regional Ranking

#2 of 21 locations

90th percentile for diversity

vs. Multnomah County

-3% 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 97 total documented species.

Corvus brachyrhynchos

American Crow

Very Common21 obs.

Junco hyemalis

dark-eyed junco

Very Common10 obs.

Gaultheria shallon

shallal

Very Common8 obs.

Tamiasciurus douglasii

Douglas's Squirrel

Very Common8 obs.

Pipilo maculatus

Spotted Towhee (Maculatus Group)

Very Common4 obs.

Turdus migratorius

American Robin

Common4 obs.

Oemleria cerasiformis

Indian plum

Common4 obs.

Achlys triphylla

sweet-after-death

Common3 obs.

Geranium robertianum

herb-robert

Common3 obs.

Trillium ovatum

Western White Wakerobin

Common3 obs.

Pseudotsuga menziesii

Oregon Pine

Common3 obs.

Melospiza melodia

Song Sparrow

Occasional3 obs.

Bombus flavifrons

Yellow head bumble bee

Occasional3 obs.

Trifolium pratense

red clover

Occasional3 obs.

Boisea rubrolineata

Occasional3 obs.

Poecile rufescens

Chestnut-backed Chickadee

Occasional2 obs.

Sphyrapicus ruber

Red-breasted Sapsucker

Occasional2 obs.

Pseudacris regilla

Pacific chorus frog

Rare2 obs.

Ariolimax columbianus

Pacific banana slug

Rare2 obs.

Bombus mixtus

Fuzzy-horned Bumble Bee

Rare2 obs.

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Most Common Species

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Want the Complete Field Guide?

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Get Your Personalized Field Guide

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

$6.99

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

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Regional Comparison

Regional Ranking

Species Count

+213%

vs. Regional Average

Compared to 8 nearby locations in Multnomah County County, Oregon

Nearby Natural Areas

Multnomah County

Importance: 0.45

100 species

-3% vs. current

Gresham

Importance: 0.43

62 species

+56% vs. current

Oaks Bottom Lake

Importance: 0.35

20 species

+385% vs. current

Crystal Springs Lake

Importance: 0.35

18 species

+439% vs. current

Sandy River

Importance: 0.35

16 species

+506% vs. current

Smith Lake

Importance: 0.35

15 species

+547% vs. current

Bybee Lake

Importance: 0.35

15 species

+547% vs. current

Force Lake

Importance: 0.35

5 species

+1840% 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 Multnomah 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

+213%

vs. Regional Average

Compared to 8 nearby locations in Multnomah County County, Oregon

Nearby Natural Areas

Multnomah County

Importance: 0.45

100 species

-3% vs. current

Gresham

Importance: 0.43

62 species

+56% vs. current

Oaks Bottom Lake

Importance: 0.35

20 species

+385% vs. current

Crystal Springs Lake

Importance: 0.35

18 species

+439% vs. current

Sandy River

Importance: 0.35

16 species

+506% vs. current

Smith Lake

Importance: 0.35

15 species

+547% vs. current

Bybee Lake

Importance: 0.35

15 species

+547% vs. current

Force Lake

Importance: 0.35

5 species

+1840% 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 21 locations

Species Distribution

Very Common20 species

Common29 species

Occasional29 species

Rare19 species

Regional Context

Regional Ranking

#2 of 21 locations

90th percentile for diversity

vs. Multnomah County

-3% species diversity

Most Common Species

Showing 20 most frequently observed species out of 97 total documented species.

Corvus brachyrhynchos

American Crow

Very Common21 obs.

Junco hyemalis

dark-eyed junco

Very Common10 obs.

Gaultheria shallon

shallal

Very Common8 obs.

Tamiasciurus douglasii

Douglas's Squirrel

Very Common8 obs.

Pipilo maculatus

Spotted Towhee (Maculatus Group)

Very Common4 obs.

Turdus migratorius

American Robin

Common4 obs.

Oemleria cerasiformis

Indian plum

Common4 obs.

Achlys triphylla

sweet-after-death

Common3 obs.

Geranium robertianum

herb-robert

Common3 obs.

Trillium ovatum

Western White Wakerobin

Common3 obs.

Pseudotsuga menziesii

Oregon Pine

Common3 obs.

Melospiza melodia

Song Sparrow

Occasional3 obs.

Bombus flavifrons

Yellow head bumble bee

Occasional3 obs.

Trifolium pratense

red clover

Occasional3 obs.

Boisea rubrolineata

Occasional3 obs.

Poecile rufescens

Chestnut-backed Chickadee

Occasional2 obs.

Sphyrapicus ruber

Red-breasted Sapsucker

Occasional2 obs.

Pseudacris regilla

Pacific chorus frog

Rare2 obs.

Ariolimax columbianus

Pacific banana slug

Rare2 obs.

Bombus mixtus

Fuzzy-horned Bumble Bee

Rare2 obs.

Want the Complete Field Guide?

Get all 97 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.