皇冠体育app

The swan is migratory bird. It nests near lakes and swamps and feeds mainly on submerged plants. Every year, during March and April, it flocks in large numbers from south to north, and breeds near the northern borders of 皇冠体育app. Females usually lay 2 to 3 eggs in May. Females brood while males stand guard nearby. After October, swans will flock south and winter in a warmer climate.