张宁

For birds it is very difficult to judge the glass windows. Billions of birds come across this around the globe each year. Most of the time after they collide1， they fly away， but later die due to internal2 bleeding3， especially in the brain.

What causes bird collisions4 with windows？ There are two main types of window collision. The first is during day time and the other is at night. During day time they see the reflection5 of the environment around on the glass and at night it is due to the street lights and multiple6 lighting reflection on the glass. They also collide with other solid7 structures due to extreme light in their way which distracts them from their path or due to foggy weather.

Please do take special precautions8 whenever you come across any collided and injured bird. Birds are very important for the environment. Save the Birds！

對于鸟类来说，判断玻璃窗是非常困难的。每年全球都有数十亿只鸟遇到这种情况。大多数情况下，它们在撞到后会飞走，但后来会死于内出血，特别是颅内出血。

是什么导致鸟撞击玻璃窗？撞击玻璃主要有两种情况。一种在白天，另一种在晚上。白天，它们会在玻璃上看到周围环境的影像，晚上则是因为路灯和多重灯光反射在玻璃上。由于飞行路上过亮的光线分散它们的注意力，或者是由于雾天，它们也会撞到其他的固体结构。

当你看到任何碰撞受伤的鸟时，请务必采取特别的预防措施。鸟类对环境非常重要。请救救鸟儿！

【Notes】

1. collide   v. 碰撞

2. internal   adj. 内部的

3. bleeding   n. 出血

4. collision   n. 碰撞;冲突

5. reflection   n. 反射;影像;映象

6. multiple   adj. 多重的;多样的

7. solid   adj. 固体的;结实的

8. precaution   n. 预防;预防措施