A PDF field guide to the species reported in and around Deer Grove Forest Preserve, 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 Deer Grove Forest Preserve include Bullfrog, Painted Turtle, White-Tailed Deer, Red-Headed Woodpecker and Tree Swallow. Plants lead the list with 38 species, followed by 5 insects and 4 birds.
The 20 species reported most often here, of 50 in the full guide.

Buckthorn
Haymaids
Bullfrog
Poison Ivy
Beebalm
Mayapple
Tell me what you're looking for, and I'll do my best to answer.
Wild Geranium
Painted Turtle

Redroot
White-Tailed Deer

Button Eryngo

Caryer Ovale
Ragweed
Dulcamara
Hedge Garlic

Venus'S-Bath
Snapweed
Red-Headed Woodpecker
Tell me what you're looking for, and I'll do my best to answer.
Tree Swallow
Indigo Bunting