Butterfly swarm shows up on Denver radar system
大量的蝴蝶显示在丹佛雷达系统
美国科罗拉多州的气象雷达发现了一种五彩缤纷、闪闪发亮的景象,这个景象是成群的迁徙蝴蝶。
Scientists at the National Weather Service (NWS) first mistook the orange radar blob for birds and had asked the public to help identifying the species.
国家气象局的科学家们首先把橙色的雷达斑点误认作鸟,并要求公众帮助识别这群鸟的具体种类。
They later established that the 70-mile wide (110km) mass was a kaleidoscope of Painted Lady butterflies.
他们后来证实,70英里宽(110km)的大群体是由画夫人蝴蝶形成的一个万花筒。
Forecasters say it is uncommon for flying insects to be detected by radar.
气象预报员说,飞行中的昆虫被雷达探测到是不常见的。
"We hadn't seen a signature like that in a while," said NWS meteorologist Paul Schlatter, who first spotted the radar blip.
"我们有一阵子没见过这样的信号了,"国家气象局的气象学家Paul Schlatter说。他是第一个发现这个雷达信号的人。
"We detect migrating birds all the time, but they were flying north to south," he told CBS News, explaining that this direction of travel would be unusual for migratory birds for the time of year.
他告诉哥伦比亚广播公司新闻：“我们总是探测到迁徙的鸟类,但它们现在正从北向南飞,"。他解释说,每年这个时候，如果是候鸟的话，这种旅行的方向是非比寻常的。
So he put the question to Twitter, asking for help determining the bird species.
于是他在Twitter提出了这个问题,请求（网民）帮助确定鸟类的种类。
Almost every response he received was the same: “Butterflies".
他收到的答复几乎都是一样的:"蝴蝶"。
"Migrating butterflies in high quantities explains it", he later wrote on the NWS Boulder Twitter account.”
大量迁徙的蝴蝶解释了这一点",他后来写在了国家气象局Boulder分局的Twitter帐户上。
Namely the three-inch long Painted Lady butterfly, which has descended in clouds on the Denver area in recent weeks.
具体的来说，这种蝴蝶是三英寸长的蝴蝶，叫画夫人。最近几周,这些蝴蝶像一片一片云似的在丹佛地区降落。
The species, commonly mistaken for monarch butterflies, are found across the continental United States, and travel to northern Mexico and the US southwest during colder months.
这个种类通常被误认为是帝王蝶,在美国大陆各处都可以看到。它们在寒冷的月份,飞往墨西哥北部和美国西南部。
They are known to follow wind patterns, and can glide hundreds of miles each day.
我们知道它们是随着风的方向和规律而飞,每天可以滑翔数百英里。
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