当鸟类种群数量减少时，幼鸟可能会难以学会正确的鸣叫声来吸引配偶。然而，关于鸟类交流方式的研究为这些物种的生存带来了希望。
聆听鸟鸣是人生的一大乐趣，但当研究人员在布宜诺斯艾利斯的一个公园里听到一段特别的鸣叫声时，他们特别兴奋。
When populations fall, fledglings can struggle to learn the right notes to attract mates. But research on how birds communicate offers hope for species’ survival Listening to birdsong is one of life’s great joys, but when researchers heard a particular tune emerging from a tree in a Buenos Aires park, they were especially jubilant.
这段旋律曾在20世纪60年代由当地的红领麻雀演唱过，但后来在该地区消失了。
This arrangement was among those chirped by the local rufous-collared sparrows in the 1960s, but had since disappeared from the area.
直到科学家们制作了一段计算机生成的版本，想要看看鸟类是否会认为它足够真实而模仿它。不到三个月后，一只当地的鸟类就开始模仿这段歌声的某些部分。
That was until scientists created a computer-generated rendition, curious to find out if birds might consider it realistic enough to imitate. Less than three months later, a local avian resident began to copy parts of the song.
