每年10月前后,从北方飞来成批的水鸟,到我国一些冬季不封冻的河湾、湖泊和水库过冬。在这些水鸟中,有丹顶鹤,有大天鹅,但是数量最多的是成群的野鸭。例如在北京八达岭长城脚下的官厅湖畔,就有一处滩涂纵横、植被丰富的水面被叫做野鸭湖。在北京的玉渊潭公园,也能看到许多野鸭在那里越冬。野鸭是水鸟的典型代表,种类 Around October each year, batches of waterbirds fly from the north to some of the river banks in our country that are not frozen, and lakes and reservoirs wintering. Among these waterbirds, there are red-crowned cranes and large swans, but the largest numbers are wild ducks. For example, at the foot of the Badaling Great Wall at Beijing’s Guanting Lake, there is a flat-faced beach with abundant vegetation called Yeyahu. Yuyuantan Park in Beijing, but also to see many wild ducks overwintering there. Mallard is a typical representative of waterfowl, species