A PDF field guide to the species reported in and around Island Lake County Park, with common and scientific names and up to 3 photos of each, laid out for use in the field and offline.
The animals people report most often in and around Island Lake County Park include White-Tailed Deer, Common Eastern Bumblebee, Painted Turtle, Asian Bush Mosquito and Rusty Patched Bumble Bee. Plants lead the list with 23 species, followed by 16 insects and 3 arachnids.
The 20 species reported most often here, of 50 in the full guide.

Buckthorn

Motherwort
White-Tailed Deer
Common Eastern Bumblebee
Butterflyweed
Painted Turtle
Tell me what you're looking for, and I'll do my best to answer.
Dulcamara
Haymaids

Asian Bush Mosquito
Rusty Patched Bumble Bee
Canada Goose
Treacle-Berry

Blacklegged Tick
Red Bee
American Toad
Baldfaced Hornet
Coneflower
Lily Of The Valley
Tell me what you're looking for, and I'll do my best to answer.

Fiddleheads

Parson Spider