Oak Brook

Ecosystem Overview

The Oak Brook ecosystem supports 100 documented wildlife species across 95 taxonomic genera. Located in DuPage County, Illinois, 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 #1 for species diversity among 37 DuPage County County natural areas, placing it in the 97th 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 37 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#1 of 37 locations

97th percentile for diversity

vs. Wheaton

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.

Magicicada septendecim

Decim Periodical Cicada

Very Common14 obs.

Magicicada cassini

Cassini Periodical Cicada

Very Common12 obs.

Verbesina alternifolia

Alternate-Leaved Crownbeard

Very Common10 obs.

Prochoerodes lineola

Large Maple Spanworm Moth

Very Common9 obs.

Massospora cicadina

Very Common9 obs.

Golovinomyces verbenae

Common8 obs.

Platanus occidentalis

American Sycamore

Common8 obs.

Hepatica acutiloba

sharp-lobed liverleaf

Common8 obs.

Sayornis phoebe

Eastern Phoebe

Common7 obs.

Claytonia virginica

Eastern Springbeauty

Common6 obs.

Verbena urticifolia

White Vervain

Common6 obs.

Odocoileus virginianus

Key Deer

Occasional6 obs.

Lepomis humilis

Orangespotted sunfish

Occasional6 obs.

Eupatorium serotinum

late boneset

Occasional6 obs.

Semotilus atromaculatus

Chub

Occasional6 obs.

Turdus migratorius

American Robin

Occasional6 obs.

Tamias striatus

eastern chipmunk

Occasional5 obs.

Anaxyrus americanus

American Toad

Rare5 obs.

Campaea perlata

Pale Beauty Moth

Rare5 obs.

Apis mellifera

Western Honey Bee

Rare5 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 Oak Brook. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

+33%

vs. Regional Average

Compared to 8 nearby locations in DuPage County County, Illinois

Nearby Natural Areas

Wheaton

Importance: 0.50

100 species

0% vs. current

Dupage County

Importance: 0.50

100 species

0% vs. current

Downers Grove

Importance: 0.50

100 species

0% vs. current

Lombard

Importance: 0.49

100 species

0% vs. current

Addison

Importance: 0.49

31 species

+223% vs. current

Glendale Heights

Importance: 0.49

4 species

+2400% vs. current

Glen Ellyn

Importance: 0.38

100 species

0% vs. current

Lisle

Importance: 0.37

67 species

+49% 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 DuPage 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

+33%

vs. Regional Average

Compared to 8 nearby locations in DuPage County County, Illinois

Nearby Natural Areas

Wheaton

Importance: 0.50

100 species

0% vs. current

Dupage County

Importance: 0.50

100 species

0% vs. current

Downers Grove

Importance: 0.50

100 species

0% vs. current

Lombard

Importance: 0.49

100 species

0% vs. current

Addison

Importance: 0.49

31 species

+223% vs. current

Glendale Heights

Importance: 0.49

4 species

+2400% vs. current

Glen Ellyn

Importance: 0.38

100 species

0% vs. current

Lisle

Importance: 0.37

67 species

+49% 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 37 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#1 of 37 locations

97th percentile for diversity

vs. Wheaton

0% species diversity

Most Common Species

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

Magicicada septendecim

Decim Periodical Cicada

Very Common14 obs.

Magicicada cassini

Cassini Periodical Cicada

Very Common12 obs.

Verbesina alternifolia

Alternate-Leaved Crownbeard

Very Common10 obs.

Prochoerodes lineola

Large Maple Spanworm Moth

Very Common9 obs.

Massospora cicadina

Very Common9 obs.

Golovinomyces verbenae

Common8 obs.

Platanus occidentalis

American Sycamore

Common8 obs.

Hepatica acutiloba

sharp-lobed liverleaf

Common8 obs.

Sayornis phoebe

Eastern Phoebe

Common7 obs.

Claytonia virginica

Eastern Springbeauty

Common6 obs.

Verbena urticifolia

White Vervain

Common6 obs.

Odocoileus virginianus

Key Deer

Occasional6 obs.

Lepomis humilis

Orangespotted sunfish

Occasional6 obs.

Eupatorium serotinum

late boneset

Occasional6 obs.

Semotilus atromaculatus

Chub

Occasional6 obs.

Turdus migratorius

American Robin

Occasional6 obs.

Tamias striatus

eastern chipmunk

Occasional5 obs.

Anaxyrus americanus

American Toad

Rare5 obs.

Campaea perlata

Pale Beauty Moth

Rare5 obs.

Apis mellifera

Western Honey Bee

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.