Self-protection of birds 鸟的自我保护
Birds protect themselves by always listening and watching out for danger. At the smallest sign of it, they will fly away. Birds that cannot fly are often able to swim fast, or run quickly.
鸟类总是通过听和看来保护自己。

只要有微小的迹象，他们就会飞走。

不会飞的鸟，往往游泳速度很快，或者跑得快。

Some birds make themselves look bigger and more dangerous by fluffing their feathers.
一些鸟类，抖动他们的羽毛，使自己看起来更大，更危险。

Another important protection for many birds is their colour. Their feathers often have colours that match the things around their nests. Some birds change colors with the seasons. In the winter they are white to match the snow. In the summer they are brown to match the ground.
很多鸟另一个重要的保护措施就是他们的颜色。

它们的羽毛总是和巢周围的环境相配。

一些鸟类随季节更改颜色。

冬季是白色的，与雪的颜色一致。

夏季是棕色的，与地面的颜色相配。

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