Wildlife biologists believe migrating waterfowl have a built-in sense to detect the approach of large storms and are particularly responsive to changes in barometric pressure .

• 野生动物生物学家相信随季节迁移的水鸟有一种与生俱来的感应能力，可以察觉到大风雪的前兆，并对大气压力的变化特别有反应。