New Haven

Ecosystem Overview

The New Haven ecosystem supports 100 documented wildlife species across 93 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 #2 for species diversity among 21 New Haven County County natural areas, placing it in the 90th 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

#2 of 21 locations

90th percentile for diversity

vs. Meriden

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.

Danaus plexippus

monarch

Very Common26 obs.

Artemisia vulgaris

mugwort

Very Common19 obs.

Ailanthus altissima

Tree of heaven

Very Common17 obs.

Reynoutria japonica

Japanese Knotweed

Very Common13 obs.

Rosa multiflora

Many-Flower Rose

Very Common13 obs.

Euonymus alatus

Winged Euonymus

Common12 obs.

Scolopax minor

American Woodcock

Common12 obs.

Celastrus orbiculatus

Asian Bittersweet

Common12 obs.

Vincetoxicum rossicum

Pale swallow-wort

Common11 obs.

Harmonia axyridis

Harlequin ladybird

Common11 obs.

Toxomerus marginatus

Syrphid Fly

Common10 obs.

Solanum dulcamara

bittersweet, woody nightshade

Occasional10 obs.

Bombus impatiens

Common Eastern Bumblebee

Occasional10 obs.

Vincetoxicum nigrum

dark vincetoxicum

Occasional10 obs.

Aralia nudicaulis

Shotbush

Occasional9 obs.

Ischnura posita

Fragile Forktail

Occasional9 obs.

Cichorium intybus

chicory

Occasional9 obs.

Toxicodendron radicans

poison ivy

Rare8 obs.

Asclepias syriaca

Virginia-Silk

Rare8 obs.

Kalopanax septemlobus

Castor aralia

Rare8 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 New Haven. Perfect for outdoor adventures, education, and nature exploration.

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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

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

Hamden

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

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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

+75%

vs. Regional Average

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

Nearby Natural Areas

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

Hamden

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

#2 of 21 locations

90th percentile for diversity

vs. Meriden

0% species diversity

Most Common Species

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

Danaus plexippus

monarch

Very Common26 obs.

Artemisia vulgaris

mugwort

Very Common19 obs.

Ailanthus altissima

Tree of heaven

Very Common17 obs.

Reynoutria japonica

Japanese Knotweed

Very Common13 obs.

Rosa multiflora

Many-Flower Rose

Very Common13 obs.

Euonymus alatus

Winged Euonymus

Common12 obs.

Scolopax minor

American Woodcock

Common12 obs.

Celastrus orbiculatus

Asian Bittersweet

Common12 obs.

Vincetoxicum rossicum

Pale swallow-wort

Common11 obs.

Harmonia axyridis

Harlequin ladybird

Common11 obs.

Toxomerus marginatus

Syrphid Fly

Common10 obs.

Solanum dulcamara

bittersweet, woody nightshade

Occasional10 obs.

Bombus impatiens

Common Eastern Bumblebee

Occasional10 obs.

Vincetoxicum nigrum

dark vincetoxicum

Occasional10 obs.

Aralia nudicaulis

Shotbush

Occasional9 obs.

Ischnura posita

Fragile Forktail

Occasional9 obs.

Cichorium intybus

chicory

Occasional9 obs.

Toxicodendron radicans

poison ivy

Rare8 obs.

Asclepias syriaca

Virginia-Silk

Rare8 obs.

Kalopanax septemlobus

Castor aralia

Rare8 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.