Fermilab’s 6,800 acres offer many diverse habitats for an ever increasing variety of wildlife. Through restoration and other management practices, the number of these quality habitats is increasing. The mixture of vegetational communities-open fields, deciduous forests, restored prairie, wetlands, and mowed areas-coupled with a large degree of protection from human intrusion, makes the Fermilab site an effective refuge for many species of animals including many mammals and numerous bird species. These animals are characteristically found in open fields, wetlands forests, and forest-edge communities. In addition, many bird species use the site as a stopover during spring and fall migration. As a result of the development of lakes and reserviors, a waterfowl habitat has been established with a consequent large increase in the waterfowl population.