免费av毛片,日韩av高清在线播放,97国产精品最好的产品,欧美成人免费一区二区三区,神马午夜一区,曰河南少妇对白视频,欧美自拍视频

Home / Opinion / Specials

Taking flight with birds for 22 years

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 China. 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.

...