Hamden

Ecosystem Overview

The Hamden ecosystem supports 100 documented wildlife species across 86 taxonomic genera. Located in New Haven County, Connecticut, 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. This location ranks #5 for species diversity among 21 New Haven County County natural areas, placing it in the 76th 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 21 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#5 of 21 locations

76th percentile for diversity

vs. New Haven

0% species diversity

Ecosystem Overview

‌
‌
‌
‌

Biodiversity Highlights

‌

Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

‌

Most Common Species

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

Sericaglaea signata

Very Common8 obs.

Harmonia axyridis

Harlequin ladybird

Very Common8 obs.

Odocoileus virginianus

Key Deer

Very Common7 obs.

Persicaria virginiana

American Jumpseed

Very Common6 obs.

Sassafras albidum

White Sassafras

Very Common6 obs.

Erythronium americanum

trout-lily

Common6 obs.

Idia aemula

Common Idia Moth

Common6 obs.

Catocala vidua

The Widow

Common6 obs.

Artemisia vulgaris

mugwort

Common6 obs.

Melospiza melodia

Song Sparrow

Common5 obs.

Mniotilta varia

Black-and-white Warbler

Common5 obs.

Patalene olyzonaria

Juniper Geometer Moth

Occasional5 obs.

Catocala habilis

Occasional5 obs.

Euonymus alatus

Winged Euonymus

Occasional5 obs.

Alliaria petiolata

garlic mustard

Occasional5 obs.

Ailanthus altissima

Tree of heaven

Occasional5 obs.

Vinca minor

lesser periwinkle

Occasional5 obs.

Setophaga coronata

Myrtle Warbler

Rare5 obs.

Catocala ilia

Ilia Underwing

Rare5 obs.

Lithophane antennata

Green Fruitworm

Rare5 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.

Most Common Species

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

Want the Complete Field Guide?

‌
‌

‌

Get Your Personalized Field Guide

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

$6.99

Get Your Personalized Field Guide

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

Email Address (for delivery)

Your field guide will be delivered to this email address. Please double-check for accuracy.

$6.99

Regional Comparison

Regional Ranking

100

Species Count

+75%

vs. Regional Average

Compared to 8 nearby locations in New Haven County County, Connecticut

Nearby Natural Areas

New Haven

Importance: 0.55

100 species

0% vs. current

Meriden

Importance: 0.44

100 species

0% vs. current

New Haven County

Importance: 0.42

100 species

0% vs. current

North Haven

Importance: 0.35

100 species

0% vs. current

Mill River

Importance: 0.35

29 species

+245% vs. current

Branford Supply Pond

Importance: 0.35

14 species

+614% vs. current

Baldwins Pond

Importance: 0.35

10 species

+900% vs. current

Iris Pond

Importance: 0.35

4 species

+2400% 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 New Haven County County.

Regional Comparison

‌

Regional Ranking

‌

Species Count

‌

vs. Regional Average

‌

Nearby Natural Areas

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

‌
‌

‌

About This Comparison

‌
‌
‌

Regional Comparison

Regional Ranking

100

Species Count

+75%

vs. Regional Average

Compared to 8 nearby locations in New Haven County County, Connecticut

Nearby Natural Areas

New Haven

Importance: 0.55

100 species

0% vs. current

Meriden

Importance: 0.44

100 species

0% vs. current

New Haven County

Importance: 0.42

100 species

0% vs. current

North Haven

Importance: 0.35

100 species

0% vs. current

Mill River

Importance: 0.35

29 species

+245% vs. current

Branford Supply Pond

Importance: 0.35

14 species

+614% vs. current

Baldwins Pond

Importance: 0.35

10 species

+900% vs. current

Iris Pond

Importance: 0.35

4 species

+2400% 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 21 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#5 of 21 locations

76th percentile for diversity

vs. New Haven

0% species diversity

Most Common Species

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

Sericaglaea signata

Very Common8 obs.

Harmonia axyridis

Harlequin ladybird

Very Common8 obs.

Odocoileus virginianus

Key Deer

Very Common7 obs.

Persicaria virginiana

American Jumpseed

Very Common6 obs.

Sassafras albidum

White Sassafras

Very Common6 obs.

Erythronium americanum

trout-lily

Common6 obs.

Idia aemula

Common Idia Moth

Common6 obs.

Catocala vidua

The Widow

Common6 obs.

Artemisia vulgaris

mugwort

Common6 obs.

Melospiza melodia

Song Sparrow

Common5 obs.

Mniotilta varia

Black-and-white Warbler

Common5 obs.

Patalene olyzonaria

Juniper Geometer Moth

Occasional5 obs.

Catocala habilis

Occasional5 obs.

Euonymus alatus

Winged Euonymus

Occasional5 obs.

Alliaria petiolata

garlic mustard

Occasional5 obs.

Ailanthus altissima

Tree of heaven

Occasional5 obs.

Vinca minor

lesser periwinkle

Occasional5 obs.

Setophaga coronata

Myrtle Warbler

Rare5 obs.

Catocala ilia

Ilia Underwing

Rare5 obs.

Lithophane antennata

Green Fruitworm

Rare5 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.