Westchester County

Ecosystem Overview

The Westchester County ecosystem supports 100 documented wildlife species across 89 taxonomic genera. Located in Westchester County, New York, 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 #3 for species diversity among 52 Westchester County County natural areas, placing it in the 94th 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 52 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#3 of 52 locations

94th percentile for diversity

vs. Yonkers

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.

Pinus strobus

White Pine

Very Common67 obs.

Bombus impatiens

Common Eastern Bumblebee

Very Common51 obs.

Aralia elata

Japanese Angelica-Tree

Very Common50 obs.

Harmonia axyridis

Harlequin ladybird

Very Common48 obs.

Celastrus orbiculatus

Asian Bittersweet

Very Common46 obs.

Lon zabulon

Zabulon Skipper

Common43 obs.

Halictus ligatus

Ligated Furrow Bee

Common40 obs.

Philanthus gibbosus

Humped Beewolf

Common37 obs.

Augochlora pura

Pure Green Sweat Bee

Common35 obs.

Bombus bimaculatus

Two-Spotted Bumble Bee

Common32 obs.

Bombus griseocollis

Brown-belted Bumblebee

Common30 obs.

Symplocarpus foetidus

Skunk Cabbage

Occasional29 obs.

Chortophaga viridifasciata

Greenstriped Grasshopper

Occasional29 obs.

Artemisia vulgaris

mugwort

Occasional29 obs.

Rubus phoenicolasius

wineberry

Occasional27 obs.

Apis mellifera

Western Honey Bee

Occasional25 obs.

Ailanthus altissima

Tree of heaven

Occasional24 obs.

Euodynerus foraminatus

Rare24 obs.

Rosa multiflora

Many-Flower Rose

Rare23 obs.

Toxomerus geminatus

Eastern Calligrapher

Rare22 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 Westchester County. Perfect for outdoor adventures, education, and nature exploration.

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Regional Comparison

Regional Ranking

100

Species Count

+150%

vs. Regional Average

Compared to 8 nearby locations in Westchester County County, New York

Nearby Natural Areas

Yonkers

Importance: 0.52

100 species

0% vs. current

White Plains

Importance: 0.46

61 species

+64% vs. current

New Rochelle

Importance: 0.46

73 species

+37% vs. current

Peekskill

Importance: 0.44

50 species

+100% vs. current

Mount Vernon

Importance: 0.42

2 species

+4900% vs. current

Tarrytown

in Town Of Greenburgh

Importance: 0.41

15 species

+567% vs. current

Scarsdale

Importance: 0.41

10 species

+900% vs. current

Ossining

in Town Of Ossining

Importance: 0.39

9 species

+1011% 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 Westchester 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

+150%

vs. Regional Average

Compared to 8 nearby locations in Westchester County County, New York

Nearby Natural Areas

Yonkers

Importance: 0.52

100 species

0% vs. current

White Plains

Importance: 0.46

61 species

+64% vs. current

New Rochelle

Importance: 0.46

73 species

+37% vs. current

Peekskill

Importance: 0.44

50 species

+100% vs. current

Mount Vernon

Importance: 0.42

2 species

+4900% vs. current

Tarrytown

in Town Of Greenburgh

Importance: 0.41

15 species

+567% vs. current

Scarsdale

Importance: 0.41

10 species

+900% vs. current

Ossining

in Town Of Ossining

Importance: 0.39

9 species

+1011% 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 52 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#3 of 52 locations

94th percentile for diversity

vs. Yonkers

0% species diversity

Most Common Species

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

Pinus strobus

White Pine

Very Common67 obs.

Bombus impatiens

Common Eastern Bumblebee

Very Common51 obs.

Aralia elata

Japanese Angelica-Tree

Very Common50 obs.

Harmonia axyridis

Harlequin ladybird

Very Common48 obs.

Celastrus orbiculatus

Asian Bittersweet

Very Common46 obs.

Lon zabulon

Zabulon Skipper

Common43 obs.

Halictus ligatus

Ligated Furrow Bee

Common40 obs.

Philanthus gibbosus

Humped Beewolf

Common37 obs.

Augochlora pura

Pure Green Sweat Bee

Common35 obs.

Bombus bimaculatus

Two-Spotted Bumble Bee

Common32 obs.

Bombus griseocollis

Brown-belted Bumblebee

Common30 obs.

Symplocarpus foetidus

Skunk Cabbage

Occasional29 obs.

Chortophaga viridifasciata

Greenstriped Grasshopper

Occasional29 obs.

Artemisia vulgaris

mugwort

Occasional29 obs.

Rubus phoenicolasius

wineberry

Occasional27 obs.

Apis mellifera

Western Honey Bee

Occasional25 obs.

Ailanthus altissima

Tree of heaven

Occasional24 obs.

Euodynerus foraminatus

Rare24 obs.

Rosa multiflora

Many-Flower Rose

Rare23 obs.

Toxomerus geminatus

Eastern Calligrapher

Rare22 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.