Pigeons are by far the most successful urban bird. 鸽子是目前最成功的城市鸟类

273. Losing its fear of humans
     丧失对人类的恐惧
274. has enabled one animal to spread into cities everywhere,
     让一种动物遍布世界各个城市
275. and in huge numbers.
     而且数量庞大
276. Pigeons are by far the most successful urban bird.
     鸽子是目前最成功的城市鸟类
277. Here, in Albi, in the south of France,
     在法国南部的阿尔比
278. the pigeons come to the river to bathe.
     鸽群飞到河边沐浴
279. They need to preen their flight feathers,
     它们要整理飞羽

来自《行星地球 第二季 第六集 Planet Earth S02E06 城市》第 276 行