Once used as a proving ground for Caterpillar Inc., this 340-acre site is a model for ecological restoration. Plantings of trees, prairie grasses and forbs are maturing beautifully. One positive indicator of ecological progress is the presence of breeding Acadian Flycatcher, a neotropical songbird that prefers a closed-canopy forests. The nature trail at Independence Park is a great place for viewing both forest and prairie birds, as well as that lucky glimpse of the wide array of Illinois wildlife, deer, coyotes, and foxes. Spring (May-June) and fall (September-October) are also peak times to catch the neotropical songbird migration.