While the white-bellied seedeater is fine with looking and sounding rather dull.

然而白腹食籽雀的外表和歌喉的都还较好。

And that, as she describes in a paper in Science, is what Ms Turbek thinks has happened in the case of the Ibera and tawny-bellied seedeaters.

正如图贝克女士在《科学》杂志上的一篇论文中所描述的那样，这就是她认为发生在伊比利亚和茶色腹食种子动物身上的情况。

The capuchino seedeaters are distributed throughout South America, and they don't appear to have any clear geographic barriers that prevent them from exchanging genes.

capuchino seedeaters 分布在整个南美洲，它们似乎没有任何明显的地理障碍来阻止它们交换基因。