双语|研究:疫情封城期间鸟类叫声更低、沟通更顺畅


一项研究显示,在美国加利福尼亚州的旧金山湾,封城期间交通噪音的下降致使该地区的白冠麻雀改变了其叫声的音量和质量。它们用更轻柔的声音“歌唱”,歌声变得更美,而且传得更远。

Photo by Owen Yin on Unsplash

San Francisco birds started singing differently in the quiet of the coronavirus lockdown, says a study in Science.

《科学》杂志的一项研究称,旧金山的鸟儿在安静的疫情封锁期间叫声发生了改变。

Before, urban white-crowned sparrow's breeding territories were almost three times as loud as rural territories, the study found.

研究发现,之前白冠麻雀在城内繁殖地区的噪音是乡下的三倍。

But during the pandemic, researchers noted that noise levels in urban areas were drastically lower. In fact, they were consistent with traffic flow in the mid-1950s.

但是在疫情期间,研究人员注意到,城区的噪音大大降低。事实上,这一噪音水平和上世纪50年代中期的交通噪音水平持平。

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