The Old Growth Forest exhibit talks about Old growth forest which typically include things like Buttress roots, Mixed aged trees, Dead trees on ground, Broccoli top, Antique bark and No signs of farming or logging  It discusses the Natural cycles of tree decay and Recyclers like Fungi, White rot fungi decay dead trees  Dead trees provide homes and food for Insects who live in the decaying trees and new trees grow in nutrient rich soil left by decaying trees.

The Old Growth Forest exhibit has pictures of several birds and replicas including:
Great crested flycatcher
Arcadian flycatcher
Olive sided flycatcher
Long eared owl
Barn owl
Eastern screech owl
Northeastern screech owl
Hawk
American northern goshawk
Red shouldered hawk
Northern shard-skinned hawk
Gray horned owl
Scarlet tanager
Starling
European starling
Ruffled grouse
American crow
Passenger pigeon
Eastern towhee
Red breasted nuthatch
Oven bird
Blue headed vireo
Red eyed vireo
Yellow throated vireo
Pileated woodpecker
Eastern hairy woodpecker
Red bellied wood pecker
Yellow bellied sap sucker