When people want to know about the weather, they usually go to there radios, TVs, newspapers, or to the Internet. However, you can also find many weather signs among wildlife, because of their highly developed senses. Drops in air pressure（压力） produce an effect on small animals in many ways. Mice and deer are good weather indicators. People who spend a lot of time outdoors have observed that, before a storm, field mice come out of their holes and run around, Deer leave high ground and come down from the mountains.
Birds are especially good weather indicators because they also show the effect of a pressure drop in many ways. For example, some birds become irritable（急躁的）and quarrelsome and will fight over a piece of bread. Other birds chirp（叽叽喳喳）and sing just before a storm. It seems they know they won’t get another chance for an hour on two. Birds also seek safe places before a storm, You will sometimes see birds settling in trees or gathering together on a wire close to a building. Pre-storm low pressure makes the are so thin that birds have difficulty flying.
It is unusual to see many birds flying overhead in the summertime, rather than during the periods in the spring or autumn. Watch for other weather signs if you see this. If they fly in the wrong direction, they may be flying ahead of a storm.
By paying closer attention to some important signs in nature, we can become better prepared for any kind of weather.

如果人们想知道天气情况，他们通常会从收音机，电视，报纸或互联网上得到信息。然而，野生动物也可以预示天气的征兆，因为它们具有高度发达的感觉器官。气压的下降在很多方面都会给小型动物带来影响。老鼠和小鹿都是很好的天气预报员，总是在户外的人们发现，在暴风雨来临之前，田鼠会钻出洞穴并在周围跑动，鹿也会离开高地，从山上跑下来。
特别是鸟儿，它们能够很好的预示天气，是因为在许多方面它们也能表现出气压下降对它们的影响，例如，有些鸟儿变得急躁和好斗，它们会为一小片面包而争斗。还有些鸟儿在暴风雨之前会叽叽喳喳的叫个不停，就好象它们知道在接下来的一两个小时里，它们不再有机会这样吵闹了。暴风雨来临之前，鸟儿还会寻找安全的地方，有时你会发现，鸟儿们会栖息在树上，或聚在离建筑物较进的电线上。暴风雨前的低压使空气变得非常稀薄，这使得鸟儿们很难起飞。
一群群的鸟儿在夏日里掠过头顶是很反常的，这种情况比春季或秋季要多，如果你看到这一现象，就再看看其它的征兆。如果他们朝错误的方向飞去，也许一场暴风雨就要来临了。
如果能更多的注意自然界中某些重要的迹象，我们也就能做出更好的准备，来应对任何天气形式了。