谁代表金莺队第一个出场击球？
这是莺数量减少的一个更合理的解释。
一只苇莺正在喂养小杜鹃。
北美莺最喜欢的猎物云杉芽虫的数量一直在下降。
The population of the spruce budworm, the warbler's favorite prey in North America, has been dropping.
它们离地面很近，但是这些蓝莺也会在灌木密度低的森林里面筑巢。
They're pretty close to the ground, but these warblers also nest in forests that have low shrub density.
证据表明，莺主要用它们极其精致的歌声吸引雌性，这清楚地证实了雌雄间选择对鸟类鸣叫进化的影响。
The evidence suggests that warblers use their extremely elaborate songs primarily to attract females, clearly confirming the effect of intersexual selection on the evolution of birdsong.
黑头莺也生活在远离水的松林里。
在对两种莺的研究中，研究人员一直在寻找的证据最终得到了证实。
The confirmation researchers had been seeking was finally achieved in studies involving two varieties of warblers.
通常，年轻的蓝莺将会在这些地方筑巢，因为有浓密灌木的首选的筑巢点已经被更年长的、地位更高的蓝莺所占领了。
It is usually the younger warblers that nest in these areas because the preferred spots where there are a lot of shrubs are taken by the older, more dominant birds.
David Haskell 制作了一些盛有泥蛋的人造鸟巢并把它们放在地面上，旁边有一个录音机，播放着树莺或地面莺的的乞食叫声。
David Haskell created artificial nests with clay eggs and placed them on the ground beside a tape recorder that played the begging calls of either tree-nesting or of ground-nesting warblers.
一只苇莺正在喂养小杜鹃。
金莺、夜莺和云雀不再唱歌了吗？
这两种莺都不喜欢出现在开阔的地方。
我想或许莺儿也感冒了张不开了喉咙。
这是屠夫鸟的声音，它们会捕食这种美丽的鹩莺。
That's the sound of butcher-birds, which prey on splendid wrens.
像麻雀，画眉，莺等专门吃昆虫 的鸟类突然进化成吃水果。
You havethese birds -- sparrows, thrushes, warblers and such -- that haveevolved very specialized beaks for eating insects suddenly switching tofruits.
毕竟能源企业不受约束便会去掠夺和污染深蓝色林莺的繁殖地。
After all, energy companies are free to ravage and poison the breeding grounds of the cerulean warbler.
进入生物学家们视野的这种鸟名叫黑头莺，欧洲常见的一种鸣鸟。
The birds in this study were Central European blackcaps, a common kind of warbler.
包括彩色霸鹟、芦鹀、白喉莺在内的鸟类常常避开在城市生存。
Species which tend to avoid cities include pied flycathers, reed bunting and whitethroat.
每当雄性鹩莺听到屠夫鸟的啼叫，它们就会这样回应[鹩莺的声音]。
Every time male wrens hear that cry, they sing this in response [wren sound].
紫莺受到了最大的打击，它们现在留在比40年前远400英里的北方过冬。
Hardest hit is the purple finch, which now resides 400 miles farther north in the winter than he did 40 years ago.
研究称，少数鸟类如黑顶莺等已经开始适应在英国过冬，但这种情况还只是少数。
A few — such as the Blackcap — have started to adapt by spending winters in Britain, but such behaviour remains exceptional, the study said.
他们先单独播放雄性细尾鹩莺的声音，然后再播放紧接着屠夫鸟叫声的鹩莺啭鸣。
They played just the male fairy-wren call. Then they played the trill of the wrens singing immediately after the butcher-birds.
但格雷格说鹩莺也许并不是真的处于危险中，伯劳鸟鸣叫的时候可能正无心打猎。
But Greig says that the wrens might not be in any real danger; when the butcherbird is singing it's probably not interested in hunting.
基斯九岁时他的爸爸曾带他去金莺公园观看金莺队比赛，那是他第一次看金莺队比赛。
When Keith was nine years old his dad had taken him to his first Orioles game at Oriole Park.
而且，健康状况、羽毛颜色等特征不同的雄性鹩莺，在鸣叫这种行为上也没有太大区别。
What's more, there are no obvious differences in male wrens' singing behavior based on other physical traits such as health and color.
在阿巴拉契亚的山顶的煤矿开采导致森林许多小片土地的减少，从而像蓝鹂莺这样的鸟类繁殖减少。
Mountaintop coal mining in Appalachia clears patches of forest contributing to the decline of birds like the cerulean warbler that breeds and forests in treetops.
在阿巴拉契亚的山顶的煤矿开采导致森林许多小片土地的减少，从而像蓝鹂莺这样的鸟类繁殖减少。
Mountaintop coal mining in Appalachia clears patches of forest contributing to the decline of birds like the cerulean warbler that breeds and forests in treetops.
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