Geese are waterfowl known for their distinctive V-shaped flight formations during migration. They belong to the family Anatidae and are closely related to ducks and swans. Geese are found in various parts of the world and are known for their honking calls. Some common species include Canada geese, snow geese, and greylag geese. They are herbivorous birds, primarily feeding on aquatic vegetation, grasses, and grains. Geese are also known for their strong pair bonds and often mate for life.