Spatial Patterns of Persistent Contaminants in Bald Eagle Nestlings at Three National Parks in the Upper Midwest, 2006-2009

During 2006 through 2009 the National Park Service Great Lakes Inventory and Monitoring Network and its partners assessed levels of targeted environmental contaminants in bald eagle (Haliaeetus leucocephalus) nestlings at sites in and adjacent to the Apostle Islands National Lakeshore, Mississippi National River and Recreation Area, and St. Croix National Scenic Riverway.