Friday Harbor

Ecosystem Overview

The Friday Harbor ecosystem supports 56 documented wildlife species across 55 taxonomic genera. Located in San Juan County, Washington, this area provides critical habitat with diverse natural communities. The location hosts 12 frequently observed species and 11 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While San Juan County nearby has 44% more documented species, Friday Harbor offers unique wildlife observation opportunities. This location ranks #7 for species diversity among 18 San Juan County County natural areas, placing it in the 61th 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 18 locations

Species Distribution

Very Common12 species

Common17 species

Occasional16 species

Rare11 species

Regional Context

Regional Ranking

#7 of 18 locations

61th percentile for diversity

vs. San Juan County

-44% 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 56 total documented species.

Tonicella lineata

lined chiton

Very Common4 obs.

Sedum album

White Stonecrop

Very Common4 obs.

Cymbalaria muralis

Kenilworth ivy

Very Common3 obs.

Hesperis matronalis

Dames rocket

Very Common3 obs.

Cornu aspersum

Brown garden snail

Very Common3 obs.

Lathyrus latifolius

Perennial pea

Common2 obs.

Limenitis lorquini

Lorquin'S Admiral

Common2 obs.

Corvus brachyrhynchos

American Crow

Common2 obs.

Vinca major

Bigleaf periwinkle

Common2 obs.

Ribes sanguineum

Flowering Currant

Common2 obs.

Pentaglottis sempervirens

green alkanet

Common2 obs.

Passer domesticus

House Sparrow

Occasional2 obs.

Lonicera ciliosa

Occasional2 obs.

Cichorium intybus

chicory

Occasional2 obs.

Rubus parviflorus

Occasional2 obs.

Lottia persona

Occasional2 obs.

Lamium purpureum

Purple deadnettle

Occasional2 obs.

Amelanchier alnifolia

Rare2 obs.

Balanus glandula

Rare2 obs.

Bombus mixtus

Fuzzy-horned Bumble Bee

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 Friday Harbor. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

Species Count

+195%

vs. Regional Average

Compared to 8 nearby locations in San Juan County County, Washington

Nearby Natural Areas

San Juan County

Importance: 0.40

100 species

-44% vs. current

Cascade Lake

Importance: 0.35

10 species

+460% vs. current

Hummel Lake

Importance: 0.35

5 species

+1020% vs. current

Mountain Lake

Importance: 0.35

4 species

+1300% vs. current

Fish Hook Lake

Importance: 0.35

4 species

+1300% vs. current

Flahertys Pond

Importance: 0.35

2 species

+2700% vs. current

Dream Lake

Importance: 0.35

1 species

+5500% vs. current

Sucia Island

Importance: 0.33

26 species

+115% 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 San Juan 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

+195%

vs. Regional Average

Compared to 8 nearby locations in San Juan County County, Washington

Nearby Natural Areas

San Juan County

Importance: 0.40

100 species

-44% vs. current

Cascade Lake

Importance: 0.35

10 species

+460% vs. current

Hummel Lake

Importance: 0.35

5 species

+1020% vs. current

Mountain Lake

Importance: 0.35

4 species

+1300% vs. current

Fish Hook Lake

Importance: 0.35

4 species

+1300% vs. current

Flahertys Pond

Importance: 0.35

2 species

+2700% vs. current

Dream Lake

Importance: 0.35

1 species

+5500% vs. current

Sucia Island

Importance: 0.33

26 species

+115% 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 18 locations

Species Distribution

Very Common12 species

Common17 species

Occasional16 species

Rare11 species

Regional Context

Regional Ranking

#7 of 18 locations

61th percentile for diversity

vs. San Juan County

-44% species diversity

Most Common Species

Showing 20 most frequently observed species out of 56 total documented species.

Tonicella lineata

lined chiton

Very Common4 obs.

Sedum album

White Stonecrop

Very Common4 obs.

Cymbalaria muralis

Kenilworth ivy

Very Common3 obs.

Hesperis matronalis

Dames rocket

Very Common3 obs.

Cornu aspersum

Brown garden snail

Very Common3 obs.

Lathyrus latifolius

Perennial pea

Common2 obs.

Limenitis lorquini

Lorquin'S Admiral

Common2 obs.

Corvus brachyrhynchos

American Crow

Common2 obs.

Vinca major

Bigleaf periwinkle

Common2 obs.

Ribes sanguineum

Flowering Currant

Common2 obs.

Pentaglottis sempervirens

green alkanet

Common2 obs.

Passer domesticus

House Sparrow

Occasional2 obs.

Lonicera ciliosa

Occasional2 obs.

Cichorium intybus

chicory

Occasional2 obs.

Rubus parviflorus

Occasional2 obs.

Lottia persona

Occasional2 obs.

Lamium purpureum

Purple deadnettle

Occasional2 obs.

Amelanchier alnifolia

Rare2 obs.

Balanus glandula

Rare2 obs.

Bombus mixtus

Fuzzy-horned Bumble Bee

Rare1 obs.

Want the Complete Field Guide?

Get all 56 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.