Anser is a genus of birds that includes various species of geese. These waterfowl are known for their strong bodies, long necks, and distinctive honking calls. Anser species are typically found in temperate regions and are often seen in wetlands, lakes, and rivers. They are herbivorous, primarily feeding on grasses, seeds, and aquatic plants. The genus Anser includes well-known species such as the Canada Goose and the Greylag Goose. These birds are social and often migrate in large flocks during seasonal changes. Anser geese play important roles in their ecosystems, contributing to plant growth and serving as prey for various predators.