Showing 15 most frequently observed species out of 22 total documented species.
Autumn olive
Thyme-Leaf Sandwort
Carpenter bee
Syrphid Fly
Dickcissel
Turkeytail
Black medick
Thimbleberry
groundsel
Canada Horseweed
american speedwell
Harlequin ladybird
House Sparrow
Common Bird's Nest
Get all 22 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.
Download a professional PDF field guide featuring all the species found in Clark County, Illinois. Perfect for outdoor adventures, education, and nature exploration.
Download a professional PDF field guide featuring all the species found in Clark County, Illinois. Perfect for outdoor adventures, education, and nature exploration.
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Explore 5 documented locations in Clark County, Illinois. Each area offers unique wildlife viewing opportunities with varying biodiversity levels.
Species counts represent documented wildlife observations from citizen science contributions. Higher counts often indicate areas with diverse habitats, active monitoring, or significant ecological importance. Each location offers unique opportunities to connect with Clark County's natural heritage.