The Great Northern Diver, known in North America as the Common Loon (is a large water bird. The Great Northern Diver breeds in Canada, parts of the northern United States, Greenland, Iceland and Alaska. The diver has been known to nest in northern Scotland on rare occasions. The female lays 1 to 3 eggs on a hollowed-out mound of dirt and vegetation very close to water. Both parents build the nest, sit on the egg or eggs, and feed the young.