The swan is a large aquatic bird closely related to geese and ducks.There are actually black swans as well as white swans. Black swans are native to Australia and New Zealand.It has long neck, streamlines body and webbed leg and strong legs which helps to swim. Its habitat is pond, lake river etc. The life span of swan is 8 to 12 years. Swans are omnivorous birds but have a vegetarian diet. Swans eat underwater vegetation such as water plants. They eat seeds, berries and insects too.
Swans typically know their limits when it comes to eating and do not overeat.
They found in 7 species all around the world.