Swan is a large waterfowl with an elegant long neck. White swan has pure white feathers, a black beak and a yellow beak base. The black swan is dark all over, and its red beak and scattered white feathers make it colorful.

Swan is a migratory bird. They live in lakes and swamps and migrate to the south in groups in winter to find food. The flying swan's neck is straight, slightly raised, and its wings are flapping gracefully. It flies over Mount Everest at a height of 9 144 meters every year, making it the tallest bird in the world. The highest flying altitude is17000m.