For migratory birds, stopover sites provide essential food resources during a part of the life-cycle when at least some species suffer relatively high mortality. Stopover habitat has been neglected in many conservation efforts to protect migratory birds, in part because habitats are used for a short time and use can vary depending on many factors that are independent of the characteristics of the site, such as weather conditions during migration. This short and variable window of habitat use makes the process of identifying important areas to protect very challenging. Even so, surprisingly little attention has been devoted to protecting the habitat needed to support this part of the life-cycle. This map displays stopover sites for landbirds, shorebirds, and waterfowl within 25 km of Lakes Michigan, Huron, Erie, Ontario, and connecting waters.