They classified the birds as those that breed in the heart of the city or those that avoid the hustle and bustle. And then they compared the bird brains.

他们将城市中心繁殖的小鸟和远离喧嚣的小鸟分开来比较它们的大脑。

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In Dar, one morning before my train trip, I made my way to the roof of my hotel for a bird 's-eye view of the city below.

踏上这段火车之旅的前一天早晨，我登上旅馆的屋顶，想鸟瞰城市面貌，有位英国建筑工头站在那里，监督旅馆的扩建情况。

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Earlier this flu season, for example, when reports of avian influenza overseas hit the news in the U.S., there was a spike in bird flu queries online in new York City.

今年流感季节，例如，当报告的禽流感袭击的消息在海外的美国，有一个上升的禽流感查询在线在纽约市。

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Two men have died in the Chinese city of Shanghai, after contracting a strain of bird flu not previously known in humans, Chinese officials say.

BBC: China bird flu: Two men die in Shanghai

The city has periodically conducted such campaigns since its initial bird flu outbreak in 1997.

WSJ: Hong Kong Steps Up Bird-Flu Measures

In 1997, after bird flu first jumped the species barrier, Hong Kong was the first city to be badly affected.

WSJ: Hong Kong Steps Up Bird-Flu Measures