And it was that which resulted in the Passeri's current diversity.

这也导致了雀形目的多样性。

This reevolved ability may have been instrumental in their success. Since almost half the bird species now alive are Passeri, that is no small matter.

这种再进化的能力可能对它们的成功起到了重要作用。因为现在几乎一半的鸟类都是雀形目，这不是一件小事。

The mutations in the songbird lineage must thus have happened after the Passeri and Tyranni lines diverged, but before the Passeri themselves began proliferating into their current variety.

因此，鸣禽谱系的突变一定发生在雀形目和霸鹟亚目品种的分化之后，而又在雀形目本身开始繁殖成目前的品种之前。

Intriguingly, when Dr Toda and Dr Baldwin looked at the molecular modifications which allowed the T1R1-T1R3 receptors of hummingbirds and Passeri to detect sweetness, they found them to be completely different.

有趣的是，户田博士和鲍德温博士研究了使蜂鸟和雀形目的T1R1-T1R3受体感知甜味的分子修饰，结果发现它们是完全不同的。

Yet this might have come about if it had not been for a genetic change that happened some 30m years ago, at the beginning of the evolution of the Passeri, to give songbirds their proper name.

然而，如果不是大约3000万年前雀形目进化初期发生的基因变化给了鸣禽真正的名字，可能这个世界就真的没有鸟儿歌唱。