A willow warbler is similar to the greater whitethroat but smaller .

柳莺与大白喉莺相似，但体型较小。

Migrating birds such as the garden warbler and whitethroat will face longer journeys because of climate change , experts warned today .

专家今天警告到：由于气候变化，像花园的鸣鸟和白喉莺这样的迁徙鸟类将面临更长的旅途。

Any of various small , often brownish or grayish old world songbirds of the family silviidae , as the blackcap and the whitethroat .

鸣禽任何一种属于银莺科的小型、常为棕色或灰色的东半球歌鸟，如黑顶莺和灰莺。

This is bad news for birds like the whitethroat , a common farmland bird . The added distance is a considerable threat .

这对于像白喉莺这样普通的农田小鸟来说是个坏消息，延长的距离对它们是一个相当大的威胁。