Locations in Mercer County, Illinois
Species in Mercer County
Common Species in Mercer County
Showing 15 most frequently observed species out of 37 total documented species.
Ischnura verticalis
Eastern Forktail
Popillia japonica
Japanese Beetle
Plathemis lydia
Common Whitetail
Perithemis tenera
Eastern Amberwing
Spizella passerina
Chipping Sparrow
Tramea lacerata
Black Saddlebags
Sayornis phoebe
Eastern Phoebe
Thamnophis sirtalis
Common Garter Snake
Caenurgina erechtea
Forage Looper Moth
Spiza americana
Dickcissel
Pachydiplax longipennis
Blue Dasher
Calystegia sepium
Hedge Bindweed
Solanum dulcamara
bittersweet, woody nightshade
Melilotus albus
white melilot
Pantala hymenaea
Spot-winged Glider
Want the Complete Field Guide?
Get all 37 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.
Get Your Personalized Field Guide
Download a professional PDF field guide featuring all the species found in Mercer County, Illinois. Perfect for outdoor adventures, education, and nature exploration.
Get Your Personalized Field Guide
Download a professional PDF field guide featuring all the species found in Mercer County, Illinois. Perfect for outdoor adventures, education, and nature exploration.
Your field guide will be delivered to this email address. Please double-check for accuracy.
Natural Areas & Wildlife Locations in Mercer County
Explore 12 documented locations in Mercer County, Illinois. Each area offers unique wildlife viewing opportunities with varying biodiversity levels.
🦅 Wildlife Viewing Areas (1 locations)
🌱 Emerging & Specialized Areas (1 locations)
📍 Additional Locations (10 locations)
About Wildlife Data
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 Mercer County's natural heritage.