Portland

Ecosystem Overview

The Portland ecosystem supports 100 documented wildlife species across 87 taxonomic genera. Located in Cumberland County, Maine, 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. Compared to nearby Yarmouth, Portland hosts 144% more species diversity. This location ranks #1 for species diversity among 25 Cumberland County County natural areas, placing it in the 96th 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 25 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#1 of 25 locations

96th percentile for diversity

vs. Yarmouth

+144% 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.

Larus smithsonianus

American Herring Gull

Very Common16 obs.

Somateria mollissima

Common Eider

Very Common11 obs.

Littorina littorea

Common periwinkle

Very Common11 obs.

Rosa rugosa

japanese rose

Very Common11 obs.

Cichorium intybus

chicory

Very Common11 obs.

Anas platyrhynchos

mallard

Common10 obs.

Passer domesticus

House Sparrow

Common8 obs.

Rhus typhina

Staghorn sumac

Common8 obs.

Trifolium pratense

red clover

Common8 obs.

Buteogallus urubitinga

Great Black Hawk

Common7 obs.

Linaria vulgaris

common toadflax

Common7 obs.

Mollugo verticillata

Common Carpetweed

Occasional7 obs.

Reynoutria japonica

Japanese Knotweed

Occasional7 obs.

Lithobates catesbeianus

Common Bullfrog

Occasional6 obs.

Carcinus maenas

European green crab

Occasional6 obs.

Celastrus orbiculatus

Asian Bittersweet

Occasional6 obs.

Saponaria officinalis

soapwort

Occasional6 obs.

Poecile atricapillus

Black-capped chickadee

Rare6 obs.

Chelydra serpentina

Snapping Turtle

Rare6 obs.

Apis mellifera

Western Honey Bee

Rare6 obs.

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Most Common Species

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

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Regional Comparison

Regional Ranking

100

Species Count

+186%

vs. Regional Average

Compared to 8 nearby locations in Cumberland County County, Maine

Nearby Natural Areas

Yarmouth

Importance: 0.43

41 species

+144% vs. current

South Portland

Importance: 0.40

100 species

0% vs. current

Cumberland County

Importance: 0.38

100 species

0% vs. current

Westbrook

Importance: 0.38

27 species

+270% vs. current

Highland Lake

Importance: 0.35

6 species

+1567% vs. current

Great Pond

Importance: 0.35

4 species

+2400% vs. current

Crescent Lake

Importance: 0.35

3 species

+3233% vs. current

Crystal Lake

Importance: 0.35

2 species

+4900% 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 Cumberland 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

+186%

vs. Regional Average

Compared to 8 nearby locations in Cumberland County County, Maine

Nearby Natural Areas

Yarmouth

Importance: 0.43

41 species

+144% vs. current

South Portland

Importance: 0.40

100 species

0% vs. current

Cumberland County

Importance: 0.38

100 species

0% vs. current

Westbrook

Importance: 0.38

27 species

+270% vs. current

Highland Lake

Importance: 0.35

6 species

+1567% vs. current

Great Pond

Importance: 0.35

4 species

+2400% vs. current

Crescent Lake

Importance: 0.35

3 species

+3233% vs. current

Crystal Lake

Importance: 0.35

2 species

+4900% 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 25 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#1 of 25 locations

96th percentile for diversity

vs. Yarmouth

+144% species diversity

Western Honey Bee

Rare6 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.