Final answer:
Shorebirds and waterfowl use the Atlantic Wildway, a route through various wetlands that extends from the Canadian Maritimes through the Appalachians to regions like Okefenokee and the Everglades.
Step-by-step explanation:
Shorebirds and waterfowl pass through various wetlands on their way North, one significant pathway being the Atlantic Wildway, which extends from the Canadian Maritimes, predominantly through the Appalachian region, and leads to areas such as the Okefenokee and the Everglades.
Wetlands along this migration route play a crucial role in the life cycle of migratory birds as they provide essential stopping points for rest, nourishment, and breeding. Coastal routes also contribute to migrations, as migratory populations follow food sources all along continental shelves as part of their journey.