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When you think of birds, you probably imagine their dazzling plumage or their beautiful songs.
當你想到鳥，你可能會想到它們耀眼的羽毛或動聽的歌聲。
But since the days of Darwin, scientists have figured that individual species of birds should not have both:
但是自從達爾文的時代開始，科學家就發現鳥類中的個體不能同時擁有這兩種特征。
they’d either be drab virtuosos or eye candy that sings only one note.
它們要么就是羽毛色彩單調的藝術大師，要么就是只能唱一個音節的花瓶角色。
Now a study shows that some songbirds are in fact show-offs in sight and sound.
而現在的一項研究表明，一些黃鶯在視覺及聲覺方面都較出色。
The work is in the Proceedings of the Royal Society B.
這項研究已經在《皇家學會學報B》上發表。
Bright feathers and complex songs are different ways to attract a mate.
明亮的羽毛和動聽的歌曲是吸引異性2種截然不同的方式。
The more flamboyant the display, the more likely a bird will get noticed.
鳥兒羽毛的色彩越艷麗，就越容易被注意。
But these exaggerated calling cards take a lot of energy to produce.
但是這種夸張的名片需要大量的精力才能創造。
Which is why scientists assumed that birds would have to choose between melody or looks.
這就是為什么科學家認為鳥類會在唱歌天賦與外貌之間做出艱難選擇。
But an exhaustive survey of the tanagers, a family of songbirds from Central and South America, shows no sign of a tradeoff.
但是對來自中美洲和南美洲黃鶯家族的唐納雀進行的一份詳細的調查表明，這種鳥類在這兩方面表現都很出色。
Although some tanager species do emphasize oration over attire, like the aptly named drab hemispingus.
一些唐納雀品種，就像它恰當的名字褐擬雀一樣歌喉勝過外表。
Some, like the mountain tanager, are both dashing and melodious.
還有比如山裸鼻雀，外表既華麗又有動聽的歌喉。
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還較好。
The different species likely experienced different selective pressures, leading to their varied strategies.
不同的物種可能經歷了大自然不同的選擇壓力，從而導致它們采取多種策略。
Whatever it takes to catch the eye, and or ear, of a potential mate.
不管是能吸引眼球還是能吸引耳朵都會成為選擇潛在伴侶對象的重要因素。
