Download a professional PDF field guide featuring all the species found in Hennepin. Perfect for outdoor adventures, education, and nature exploration.
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Compared to 8 nearby locations in Putnam County County, Illinois
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 Putnam County County.
Showing 20 most frequently observed species out of 79 total documented species.
Rusty Patched Bumble Bee
Eastern Forktail
Poison Ivy
Monarch
Silkweed

Confused Haploa Moth
Bristly Cutworm

Beautiful Wood-Nymph
Armyworm
Engrailed
Black-Ended Bear
Parsnip

Hog Sphinx

Royal Catchfly

Coreopsis

Pilotweed
Milkweed Tussock Moth

Cottonwood
Side-Oats Grama
Black-Dotted Glyph
Get all 79 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.
The Hennepin ecosystem supports 79 documented wildlife species across 74 taxonomic genera. Located in Putnam County, Illinois, this area provides critical habitat with diverse natural communities. The location hosts 16 frequently observed species and 15 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. This location ranks #19 for species diversity among 95 Putnam County County natural areas, placing it in the 80th percentile for biodiversity.