Fairfax County

Ecosystem Overview

The Fairfax County ecosystem supports 100 documented wildlife species across 96 taxonomic genera. Located in Fairfax County, Virginia, 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 27 Fairfax County County natural areas, placing it in the 89th 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 27 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#3 of 27 locations

89th percentile for diversity

vs. Vienna

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.

Diatrype virescens

Very Common1,195 obs.

Harmonia axyridis

Harlequin ladybird

Very Common318 obs.

Ardea herodias

Great Blue Heron

Very Common239 obs.

Jikradia olitoria

Coppery Leafhopper

Very Common226 obs.

Magicicada septendecim

Decim Periodical Cicada

Very Common225 obs.

Odontopus calceatus

Common223 obs.

Branta canadensis

Canada goose

Common212 obs.

Papilio glaucus

Eastern Tiger Swallowtail

Common193 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Common181 obs.

Lyssomanes viridis

Common167 obs.

Cardinalis cardinalis

Northern Cardinal

Common165 obs.

Anas platyrhynchos

mallard

Occasional162 obs.

Lon zabulon

Zabulon Skipper

Occasional157 obs.

Plethodon cinereus

Eastern Red-Backed Salamander

Occasional154 obs.

Danaus plexippus

monarch

Occasional152 obs.

Claytonia virginica

Eastern Springbeauty

Occasional150 obs.

Bombus impatiens

Common Eastern Bumblebee

Occasional149 obs.

Melospiza melodia

Song Sparrow

Rare148 obs.

Sialia sialis

Eastern Bluebird

Rare138 obs.

Leucauge venusta

Venusta Orchard Spider

Rare137 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 Fairfax County. Perfect for outdoor adventures, education, and nature exploration.

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Regional Comparison

Regional Ranking

100

Species Count

+92%

vs. Regional Average

Compared to 8 nearby locations in Fairfax County County, Virginia

Nearby Natural Areas

Vienna

Importance: 0.43

100 species

0% vs. current

Burke Lake

Importance: 0.35

100 species

0% vs. current

Woodglen Lake

Importance: 0.35

46 species

+117% vs. current

Lake Accotink

Importance: 0.35

43 species

+133% vs. current

Lake Mercer

Importance: 0.35

36 species

+178% vs. current

Lake Fairfax

Importance: 0.35

32 species

+213% vs. current

Pohick Bay

Importance: 0.35

30 species

+233% vs. current

Meadow Pond

Importance: 0.35

27 species

+270% 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 Fairfax 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

+92%

vs. Regional Average

Compared to 8 nearby locations in Fairfax County County, Virginia

Nearby Natural Areas

Vienna

Importance: 0.43

100 species

0% vs. current

Burke Lake

Importance: 0.35

100 species

0% vs. current

Woodglen Lake

Importance: 0.35

46 species

+117% vs. current

Lake Accotink

Importance: 0.35

43 species

+133% vs. current

Lake Mercer

Importance: 0.35

36 species

+178% vs. current

Lake Fairfax

Importance: 0.35

32 species

+213% vs. current

Pohick Bay

Importance: 0.35

30 species

+233% vs. current

Meadow Pond

Importance: 0.35

27 species

+270% 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 27 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#3 of 27 locations

89th percentile for diversity

vs. Vienna

0% species diversity

Most Common Species

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

Diatrype virescens

Very Common1,195 obs.

Harmonia axyridis

Harlequin ladybird

Very Common318 obs.

Ardea herodias

Great Blue Heron

Very Common239 obs.

Jikradia olitoria

Coppery Leafhopper

Very Common226 obs.

Magicicada septendecim

Decim Periodical Cicada

Very Common225 obs.

Odontopus calceatus

Common223 obs.

Branta canadensis

Canada goose

Common212 obs.

Papilio glaucus

Eastern Tiger Swallowtail

Common193 obs.

Agelaius phoeniceus

Red-Winged Blackbird (Red-Winged)

Common181 obs.

Lyssomanes viridis

Common167 obs.

Cardinalis cardinalis

Northern Cardinal

Common165 obs.

Anas platyrhynchos

mallard

Occasional162 obs.

Lon zabulon

Zabulon Skipper

Occasional157 obs.

Plethodon cinereus

Eastern Red-Backed Salamander

Occasional154 obs.

Danaus plexippus

monarch

Occasional152 obs.

Claytonia virginica

Eastern Springbeauty

Occasional150 obs.

Bombus impatiens

Common Eastern Bumblebee

Occasional149 obs.

Melospiza melodia

Song Sparrow

Rare148 obs.

Sialia sialis

Eastern Bluebird

Rare138 obs.

Leucauge venusta

Venusta Orchard Spider

Rare137 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.