Download a professional PDF field guide featuring all the species found in Illinois. Perfect for outdoor adventures, education, and nature exploration.
Your field guide will be delivered to this email address. Please double-check for accuracy.
Showing 20 most frequently observed species out of 78 total documented species.
Poison Ivy

Buckthorn
Haymaids
Common Eastern Bumblebee
Mayapple
Hedge Garlic
Beebalm
Canada Goose
American Robin
Common Cardinal
Boxelder
Brown-Belted Bumblebee
Red-Winged Blackbird

Motherwort
Bluebells
Wild Geranium
Ragweed
Dulcamara
Horseweed
Poke
Get all 78 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.
The Illinois ecosystem supports 78 documented wildlife species across 70 taxonomic genera. Located in Illinois, this area provides critical habitat for regional wildlife. The location hosts 16 frequently observed species and 15 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. Compared to nearby Adams County, Illinois hosts 10% more species diversity.