I might have identified the bird as a yellow-throated vireo if I'd had more than a dorsal view, "explained Roger."
罗格说，如果从背后的角度多看一眼，就会认出这个有着黄色咽喉的绿鹃。
She's given an insect to one of her nestlings, but now this black-capped vireo mother has two more hungry mouths to feed.
这只黑头绿鹃妈妈已经喂了一只昆虫给自己一只未离巢的雏鸟，现在她又多了两张嗷嗷待哺的小鸟。
The red-eyed vireo suffers some of the biggest losses, some 581,000 deaths annually, though that represents less than 1 percent of its population.
红眼莺雀遭受的损失最为严重，每年大约有58万红眼莺雀撞塔而死，尽管这只是总数量的百分之一都不到。
The eradication of cowbirds has been going on for a while here in an effort to study the effect of their parasitism on endangered birds such as the black-capped vireo and the golden-cheeked warbler.
在这里，根除燕八哥的活动已经进行了一段时间，目的是研究它们对黑头绿鹃和金颊莺之类濒危鸟类的寄生影响。
The eradication of cowbirds has been going on for a while here in an effort to study the effect of their parasitism on endangered birds such as the black-capped vireo and the golden-cheeked warbler.
在这里，根除燕八哥的活动已经进行了一段时间，目的是研究它们对黑头绿鹃和金颊莺之类濒危鸟类的寄生影响。
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