The swan is a beautiful and elegant large bird that symbolizes nobility and grace. In this popular science article, we will introduce you to some interesting facts and information about swans.

Species and Distribution

There are currently five species of swans in the world: whooper swans, cygnets, mute swans, black swans, and black-necked swans. Black swans are distributed in Oceania, while black-necked swans are found outside South America.

Appearance

Swans are large birds, with the largest species measuring up to 1.5 meters in length and weighing over 6,000 grams. They have white feathers covering their bodies, mostly black beaks, and yellow from their upper beaks to their nostrils.

Their head and neck are very long, accounting for about half of their body length. When swans swim, they often straighten their necks and press their wings against each other. Their graceful posture has made them an embodiment of beauty, innocence, and kindness throughout history.

Habit

Swans are vegetarians and mainly feed on aquatic plants, aquatic animals, and plankton. They use their broad, flat beaks to mow down aquatic vegetation and their strong necks to carry food into their mouths.

Swans are social animals and often gather in large flocks. They are diurnal, active during the day and usually sleeping at night. Swans love swimming and are adept at diving, staying underwater for up to several minutes.

Swans maintain a rare "lifelong companionship." When overwintering in the south, they remain in pairs whether feeding or resting. While the female swan lays eggs, the male stands guard. When encountering an enemy, the male swan flaps its wings to fight bravely.

Reproduction

Swans usually start breeding in the spring. They build nests near lakes, rivers, and shorelines, often with water plants and other vegetation. Swans typically lay 2-7 eggs, and the egg incubation period is 35-45 days.

Migration

Swans are winter migratory birds that prefer living in groups in lakes and swamps, mainly feeding on aquatic plants. They fly from south to north every March and April.

The female swan lays two or three eggs every May, and the male swan guards her side, never leaving her for a moment. Once October is over, they migrate south in groups.

Ecological Function

Swans play an important role in the ecosystem beyond their beauty. They are significant herbivores in waters, which helps maintain the ecological balance of aquatic plants. They are also prey for many predators.

Conservation Status of Swans

However, swans also face threats such as habitat destruction, environmental pollution, hunting, and illegal trade. To protect swans and their habitats, a series of protection measures have been internationally adopted, including setting up nature reserves, banning hunting and trade, and more.

Under human protection, the number of swans has increased. Therefore, each of us should do our part to protect these beautiful and noble animals and ensure their continued existence and reproduction in the future.