Birding is a popular pastime that naturally leads to an interest in bird identification.
观鸟是一项很流行的休闲活动，自然而然地会使你对鸟类鉴别产生乐趣。
Schulten's latest proposed role for superoxide, an oxygen anion found in bird eyes, fits with their findings.
斯考尔滕最新的提议是过氧化物的作用，这是一种在鸟类眼球中找到的氧元素的阴离子，它正好与该组织的发现相吻合。
Physical characteristics that are important in bird identification include colors, markings, and bill or beak.
羽色、特殊标记以及鸟喙形状等特征在鸟类识别中有很大作用。
The researchers linked the rate of evolution in the parasites to the rate of evolution in bird hosts in the West Indies.
研究者将寄生虫的进化率和西印度群岛的禽类宿主的进化率联系起来。
The boy obviously needs a lesson in bird species, but his compassionate intention is a sign that he could grow up to be a genius.
很显然，小男孩需要上一堂关于鸟类的课，但他的慈悲意识，表明了他将来会是个天才。
Three of the cases they studied found that the rise of West Nile virus in the U.S. corresponded to decreases in bird population density.
他们在研究过的三个案例中发现西尼罗河热在美国的的流行与鸟类种群密度的下降相关。
The findings showed that over 20 years there was a 71 percent drop in native butterfly populations and a 54 percent drop in bird populations.
结果发现，20年来本地蝴蝶的数量下降了71%、鸟的数量下降了54%。
Earlier this flu season, for example, when reports of avian influenza overseas hit the news in the U.S., there was a spike in bird flu queries online in new York City.
今年流感季节，例如，当报告的禽流感袭击的消息在海外的美国，有一个上升的禽流感查询在线在纽约市。
According to Dean Noble, director of marketing at Santa Barbara Zoo in California， this black-bodied bird is the master of post-coitus care.
加州圣巴巴拉动物园的营销总监迪恩·诺布尔表示，这种黑色的鸟在交配后十分懂得照顾对方。
In terms of appearance, kites were frequently designed in the image of a native bird, or a Maori god, and sometimes, perhaps less often, a well-known hero.
就外形而言，风筝通常是按照当地鸟类或毛利神的形象设计的，有时，可能没那么频繁，风筝的形象是一位著名的英雄。
It turned out that there were actually four times as many bird pairs or couples living in the stream edge habitat compared to the area away from the stream.
事实证明，生活在溪边栖息地的鸟对数量是远离溪边栖息地的四倍。
The girl looked up and saw that the voice came from a bird hanging in a cage on the wall.
女孩抬头一看，声音是从挂在墙上笼子里的一只鸟发出来的。
Once, a bird died on the sill and they spent the entire day in the pantry.
有一次，一只鸟死在了窗台上，而他们在储藏室里呆了一整天。
The object in the sky apparently had wings far too short and wide for a bird.
天空中这个物体的翅膀显然太短太宽了，不是鸟类。
There was once a man in South America who had a parrot, a pet bird that can imitate human speech.
从前，南美洲有个人养了一只鹦鹉，一种能模仿人类说话的宠物鸟。
Decades of studies of bird flocks led researchers to predict extra alertness in the more vulnerable, end of the row sleepers.
通过对鸟群几十年的研究，研究人员预测，那些更容易受伤的、睡眠时处于队列末端的鸟会格外警觉。
They were so tranquil and clear that Olle thought he saw a bird drowning in one, when it was actually the reflection of a gull gliding above the surface.
它们是那么平静那么清澈，以至于 Olle以为自己看见一只鸟正沉入水中，其实那是一只正在滑翔的海鸥在水中的倒影。
I was born with a recurring nightmare of a great bird picking me up in its claws and dropping me into an empty ocean.
自出生以来，我都反复做着一个噩梦，一只大鸟用它的双爪把我抓起，扔到汪洋大海之中。
In a broken-wing display, the bird spreads and drags the wings or its tail, and while it does that, it slowly moves away from the nests.
在一次折翼展示中，鸟展开并拖动它的翅膀或尾巴，一边拖，一边慢慢远离巢穴。
She held the bird gently in cupped hands.
她双手轻轻地捧着那只小鸟。
Another temporary discount may not be what you want, but at least it is a bird in the hand.
再一次临时打折可能达不到你所希望的，但至少这是已经到手的东西。
One day he caught a little bird and held it in his hands without anybody seeing it.
一天，他抓了一只小鸟，拿在手里，没有人看见。
The poor child felt like a little bird that is placed in a glittering cage for the first time.
这个可怜的孩子第一次觉得自己就像一只小鸟，被关在一个闪闪发光的笼子里。
A male bird of paradise may put himself in the limelight by displaying his spectacular plumage in the best stage setting to attract a female.
一只雄性天堂鸟可能会在最佳的场合中展示他华美的羽毛使自己成为关注的焦点，从而吸引雌性。
In front of the door he observed a bird which had caught itself in the thicket.
在门前，他看见了一只鸟被困在灌木丛中。
They were holding what looked like ropes that led, via some kind of mechanical system, to a giant bird in the sky.
他们拿着一些看起来像绳子的东西，这些“绳索”通过一些机械系统，延伸向天空中的一只“巨鸟”。
Presently the bird came in and wanted to serve up the dinner, but he could nowhere see the cook.
不一会儿，鸟儿飞了进来，想要把饭端上来，但是他找不到厨师。
He's seen it in a pair of birds dozing side by side in the zoo and in a single pet bird sleeping by a mirror.
他在动物园里的一对并排打盹的鸟和一只在镜子旁睡觉的宠物鸟身上看到过。
The only thing he was afraid of in his life was the parrot. This bird seemed to have an unreasonable urge to peck him to death.
他这一辈子唯一害怕的就是鹦鹉。这种鸟似乎有一种难以理喻的冲动要啄死他。
The only thing he was afraid of in his life was the parrot. This bird seemed to have an unreasonable urge to peck him to death.
他这一辈子唯一害怕的就是鹦鹉。这种鸟似乎有一种难以理喻的冲动要啄死他。
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