Can swans be proud of their feathers and webbed feet when swimming?

Everyone must have heard the story of the ugly duckling. The ugly duckling in the story is actually a beautiful white swan. Swan, also called mandarin fish, is a kind of bird. Like a goose, it is large and can be divided into white swan and black swan. The feet and tail are short and webbed. They live in seashores and lakes, fly well, and feed on plants and insects.

Swan's swimming ability comes from its feathers and webbed feet. Swan has a lot of fat in its body and a caudate gland on its tail, which can provide oil. The body surface is covered with a thick layer of impermeable feathers.

Swans often comb these feathers with their mouths, and at the same time rub the oil secreted by the fat glands at the tail on the feathers, so that the feathers are not easy to get wet by water. Feathers generate great buoyancy, and paddle-like fins keep paddling, so swans can swim leisurely on the water.

[I still want to know]

Swan is monogamous. If one of them dies, the other will be killed or starved to death.

When some swans defend their territory, they will use their actions to signal other swans to leave.