He mistook the cockcrow for birdsong.

他把鸡啼错当鸟鸣了。

You get to hear birdsong in places that are currently silent.

沉寂的地方将再次听得到鸟儿歌唱。

It may not be the most melodious bit of birdsong you'll ever encounter.

（山雀的警报信号）可能不是你听过的最悦耳的鸟鸣声。

Studying female birdsong is no simple task.

研雌性鸟鸣并不是简单的工作。

In lockdown, cities from Rio to Barcelona were transformed as wildlife and birdsong replaced the noise of taxi horns and traffic.

封锁期间，从里约热内卢到巴塞罗那的城市都发生了变化，野生动物和鸟鸣声取代了出叭声和交通噪音。

Well you can sometimes hear birdsong in the city but it's the buildings that cause these natural sounds to be drowned out.

城市里，有时候你也能听到鸟叫声，但正是这些建筑淹没了这些自然的声音。

Yes, whether it's the natural sounds of birdsong, the wind blowing, or man-made noise, like traffic or music – there's always something we can hear.

是的，无论是鸟鸣的自然声音，风声，还是人为的噪音，如交通噪音或音乐，我们总能听到一些声音。

The researchers found that being outdoors, seeing trees, hearing birdsong, seeing the sky, and feeling in contact with nature were associated with higher levels of mental well-being.

研人员发，“置身户外、观赏绿植、聆听鸟鸣、仰望天空等”接触大自然的感觉与良好的精神状态紧密相连。