Middlesex County

Ecosystem Overview

The Middlesex County ecosystem supports 100 documented wildlife species across 96 taxonomic genera. Located in Massachusetts, this area provides critical habitat for regional wildlife. 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 #30 for species diversity among 710 Massachusetts 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

#30

Regional Rank

Out of 710 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#30 of 710 locations

96th percentile for diversity

vs. Massachusetts

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.

Poecile atricapillus

Black-capped chickadee

Very Common2,025 obs.

Cardinalis cardinalis

Northern Cardinal

Very Common1,023 obs.

Baeolophus bicolor

tufted titmouse

Very Common691 obs.

Sitta carolinensis

White-Breasted Nuthatch (Interior West)

Very Common513 obs.

Turdus migratorius

American Robin

Very Common436 obs.

Dryobates pubescens

Downy Woodpecker

Common433 obs.

Sciurus carolinensis

Grey squirrel

Common372 obs.

Ardea herodias

Great Blue Heron

Common360 obs.

Anas platyrhynchos

mallard

Common354 obs.

Bombus impatiens

Common Eastern Bumblebee

Common334 obs.

Branta canadensis

Canada goose

Common329 obs.

Cygnus olor

Mute Swan

Occasional313 obs.

Zonotrichia albicollis

white-throated sparrow

Occasional287 obs.

Chimaphila maculata

Spotted Pipsissewa

Occasional252 obs.

Pinus strobus

White Pine

Occasional231 obs.

Meleagris gallopavo

Turkey

Occasional231 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Occasional227 obs.

Sylvilagus floridanus

Lapin A Queue Blanche

Rare220 obs.

Tamias striatus

eastern chipmunk

Rare215 obs.

Zenaida macroura

Mourning Dove

Rare213 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 Middlesex County. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

vs. Regional Average

Compared to 8 nearby locations in Massachusetts

Nearby Natural Areas

Massachusetts

Importance: 0.78

100 species

0% vs. current

Boston

Importance: 0.73

100 species

0% vs. current

Cambridge

Importance: 0.57

100 species

0% vs. current

Worcester

Importance: 0.54

100 species

0% vs. current

Quincy

Importance: 0.49

100 species

0% vs. current

Lowell

Importance: 0.49

100 species

0% vs. current

Newton

Importance: 0.48

100 species

0% vs. current

Worcester County

Importance: 0.48

100 species

0% 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 Massachusetts.

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

vs. Regional Average

Compared to 8 nearby locations in Massachusetts

Nearby Natural Areas

Massachusetts

Importance: 0.78

100 species

0% vs. current

Boston

Importance: 0.73

100 species

0% vs. current

Cambridge

Importance: 0.57

100 species

0% vs. current

Worcester

Importance: 0.54

100 species

0% vs. current

Quincy

Importance: 0.49

100 species

0% vs. current

Lowell

Importance: 0.49

100 species

0% vs. current

Newton

Importance: 0.48

100 species

0% vs. current

Worcester County

Importance: 0.48

100 species

0% 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

#30

Regional Rank

Out of 710 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#30 of 710 locations

96th percentile for diversity

vs. Massachusetts

0% species diversity

Most Common Species

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

Poecile atricapillus

Black-capped chickadee

Very Common2,025 obs.

Cardinalis cardinalis

Northern Cardinal

Very Common1,023 obs.

Baeolophus bicolor

tufted titmouse

Very Common691 obs.

Sitta carolinensis

White-Breasted Nuthatch (Interior West)

Very Common513 obs.

Turdus migratorius

American Robin

Very Common436 obs.

Dryobates pubescens

Downy Woodpecker

Common433 obs.

Sciurus carolinensis

Grey squirrel

Common372 obs.

Ardea herodias

Great Blue Heron

Common360 obs.

Anas platyrhynchos

mallard

Common354 obs.

Bombus impatiens

Common Eastern Bumblebee

Common334 obs.

Branta canadensis

Canada goose

Common329 obs.

Cygnus olor

Mute Swan

Occasional313 obs.

Zonotrichia albicollis

white-throated sparrow

Occasional287 obs.

Chimaphila maculata

Spotted Pipsissewa

Occasional252 obs.

Pinus strobus

White Pine

Occasional231 obs.

Meleagris gallopavo

Turkey

Occasional231 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Occasional227 obs.

Sylvilagus floridanus

Lapin A Queue Blanche

Rare220 obs.

Tamias striatus

eastern chipmunk

Rare215 obs.

Zenaida macroura

Mourning Dove

Rare213 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.