Cook County Wildlife Guide - Wildlife Field Guide

Ecosystem Overview

The Cook County ecosystem supports 73 documented wildlife species across 66 taxonomic genera. Located in Cook County, Illinois, this area provides critical habitat with diverse natural communities. The location hosts 15 frequently observed species and 14 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Hometown nearby has 9% more documented species, Cook County offers unique wildlife observation opportunities.

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Species Distribution

Very Common15 species

Common22 species

Occasional22 species

Rare14 species

Regional Context

vs. Hometown

-9% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

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Most Common Species

Showing 20 most frequently observed species out of 73 total documented species.

Rhamnus cathartica

Buckthorn

Very Common755.12 obs.

Glechoma hederacea

Haymaids

Very Common399.9 obs.

Toxicodendron radicans

Poison Ivy

Very Common366.09 obs.

Alliaria petiolata

Hedge Garlic

Very Common267.37 obs.

Acer negundo

Boxelder

Very Common240.04 obs.

Monarda fistulosa

Beebalm

Common236.73 obs.

Podophyllum peltatum

Mayapple

Common234.86 obs.

Solanum dulcamara

Dulcamara

Common210 obs.

Branta canadensis

Canada Goose

Common209 obs.

Passer domesticus

House Sparrow

Common204 obs.

Turdus migratorius

American Robin

Common200 obs.

Agelaius phoeniceus

Red-Winged Blackbird

Occasional195 obs.

Sciurus carolinensis

Gray Squirrel

Occasional175 obs.

Cardinalis cardinalis

Common Cardinal

Occasional160 obs.

Anas platyrhynchos

Mallard

Occasional155 obs.

Hibiscus syriacus

Althea

Occasional151 obs.

Vinca minor

Myrtle

Occasional144 obs.

Trifolium repens

Dutch Clover

Rare140 obs.

Aegopodium podagraria

Ashweed

Rare136 obs.

Geranium maculatum

Wild Geranium

Rare136 obs.

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Most Common Species

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Ecosystem Overview

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Species Distribution

Very Common15 species

Common22 species

Occasional22 species

Rare14 species

Regional Context

vs. Hometown

-9% species diversity

Most Common Species

Showing 20 most frequently observed species out of 73 total documented species.

Rhamnus cathartica

Buckthorn

Very Common755.12 obs.

Glechoma hederacea

Haymaids

Very Common399.9 obs.

Toxicodendron radicans

Poison Ivy

Very Common366.09 obs.

Alliaria petiolata

Hedge Garlic

Very Common267.37 obs.

Acer negundo

Boxelder

Very Common240.04 obs.

Monarda fistulosa

Beebalm

Common236.73 obs.

Podophyllum peltatum

Mayapple

Common234.86 obs.

Solanum dulcamara

Dulcamara

Common210 obs.

Branta canadensis

Canada Goose

Common209 obs.

Passer domesticus

House Sparrow

Common204 obs.

Turdus migratorius

American Robin

Common200 obs.

Agelaius phoeniceus

Red-Winged Blackbird

Occasional195 obs.

Sciurus carolinensis

Gray Squirrel

Occasional175 obs.

Cardinalis cardinalis

Common Cardinal

Occasional160 obs.

Anas platyrhynchos

Mallard

Occasional155 obs.

Hibiscus syriacus

Althea

Occasional151 obs.

Vinca minor

Myrtle

Occasional144 obs.

Trifolium repens

Dutch Clover

Rare140 obs.

Aegopodium podagraria

Ashweed

Rare136 obs.

Geranium maculatum

Wild Geranium

Rare136 obs.

Want the Complete Field Guide?

Get all 73 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.