A duck is a kind of bird. 鸭子是一种鸟类。

　　Ducks are smaller than swans and geese. 鸭子比天鹅和鹅的体型小。

　　They live in both rivers and seas. 鸭子生活在河里和海里。

　　What do ducks eat?  鸭子吃什么呢？

　　They eat many things, such as grasses, insects, small fish, small frogs and worms. 它们吃很多种食物，如草，昆虫，小鱼，小青蛙和蠕虫。

　　Ducks'nests are quite often attacked by larger animals. 鸭子的窝经常被大型动物偷袭。

　　For example, foxes, eagles and hawks. 例如，狐狸和老鹰。