The Food Web of Bald Eagles in Michigan Michael J. Shaw School of Science and Natural Resources Lake Superior State University Sault Ste. Marie, MI 49783 Abstract: The Bald Eagle's (Haliaeetus leucocephalus) diet has been studied extensively throughout the United States, although there has been very little work related to better quantify the eagle's food web to determine risk to eagles from consuming certain prey items. This study was conducted to quantify and better develop a food web of eagles living in Saginaw River/Bay in contrast to eagles living along two rivers in the northern lower peninsula of Michigan from 1990 until 1996. Diets were assessed by observing prey deliveries to nest sites and from collecting prey remains from around the nest and during banding procedures. Class and size of prey items were recorded, then if possible, identified to Genus and Species. Eagles nesting in northern Michigan generally consumed more fish than those in Saginaw River/Bay, while those in Saginaw River/Bay had more birds and mammals in their diet. There was a significant difference in observed class of prey between the two study areas as determined by a Chi-squared test (p