The ostrich can't fly but it sure can run. 鸵鸟不会飞，但它肯定会跑。
The Inca tern has a fancy mustache 印加燕鸥的胡子很漂亮
and kind of a fancy lifestyle. 还有一种奇特的生活方式。
The marabou stork maybe the ugliest bird 鹳也许是最丑的鸟
on the African savannah. 在非洲大草原上。
The peacock is simply as handsome as they come. 孔雀和它们来的时候一样英俊。
And the hornbill is a true romantic. 而犀鸟是一个真正的浪漫。
All these winged weirdoes have amazing abilities 所有这些长翅膀的怪胎都有惊人的能力
that help them survive with style. 这有助于他们保持时尚。
The biggest bird in the world is a fraud. 世界上最大的鸟是欺诈。
It can't even fly. 它甚至不能飞。
It's misleading in its appearance 它的外表有误导性
with the wings and all. 带着翅膀和一切。
But a fraud has also been perpetrated on the ostrich. 但也有人对鸵鸟进行了欺诈。
So, in fairness, it should be cleared up. 所以，公平地说，应该澄清。
Contrary to believe, 与相信相反，
the ostrich doesn't bury its head in the sand 鸵鸟不会把头埋在沙子里
to avoid unpleasant situations. 避免不愉快的情况。
Whoever came up with that owes the ostrich an apology. 不管是谁提出的，都应该向鸵鸟道歉。
It's a ridiculous notion. 这是个荒谬的想法。
It couldn't breathe while doing that. 这样做的时候它不能呼吸。
Though it may look like it sometimes, 虽然有时看起来像，
what it is probably doing is eating. 它可能在吃东西。
But some of their behavior is quite bird-like. 但他们的一些行为很像鸟。
It is attracted to shiny things. 它被闪亮的事物所吸引。
It lays huge eggs 它下了很多蛋
and it has wings. 它有翅膀。
But it is an odd bird. 但它是一只奇怪的鸟。
But what is odd about the ostrich 但是鸵鸟有什么奇怪的
is what's great about the ostrich. 是鸵鸟最棒的地方。
It is indeed the biggest bird in the world 它的确是世界上最大的鸟
and it has large, impressive wings 它有巨大的，令人印象深刻的翅膀
and it cannot fly. 它不能飞。
What it can do is run like the wind. 它能做的就是像风一样奔跑。
Of course, it looks a little silly when it runs 当然，它跑起来有点傻
but this is the bird you want to put your money on in a race 但这是你想在比赛中花钱买的鸟
because that is the fastest silly walk you'll ever see- 因为那是你见过的最快的愚蠢的散步-
up to 45 miles an hour of silly. 高达每小时45英里的愚蠢。
With only two toes, 只有两个脚趾，
their clawed feet look like a dinosaur's, 它们的爪子看起来像恐龙的脚，
that actually helps them reach that incredible speed. 这实际上帮助他们达到了不可思议的速度。
But why do they need to be so fast? 但他们为什么要这么快？
Sometimes, they have to get away from very fast predators 有时，它们必须远离速度极快的捕食者
like lions, cheetahs or hyenas. 像狮子，猎豹或鬣狗。
The ostrich's speed comes from its long powerful legs, 鸵鸟的速度来自它强壮的长腿，
which can take strides of up to 15 feet. 可以跨步15英尺。
They have to turn quickly, 他们必须迅速转向，
that's where the wings come into play. 那是翅膀发挥作用的地方。
They will use them as rudders to help change direction. 他们会把它们当作方向舵来帮助改变方向。
And if it gets cornered, 如果它被逼到角落，
those legs can be used as a formidable weapon. 这些腿可以作为一种强大的武器。
The ostrich could potentially kill a large animal 鸵鸟可能会杀死一种大型动物
with a well-placed kick, 踢得很好，
especially with that nasty claw sticking out. 尤其是那只脏爪子伸出来的时候。
But mostly they run away 但他们大多都逃跑了
and they look pretty funny doing it. 他们这样做看起来很有趣。
But why can't they fly? 但为什么他们不能飞？
Some scientists think their ancestors could. 一些科学家认为他们的祖先可以。
Dinosaurs were the biggest predators. 恐龙是最大的食肉动物。
One theory is that after the dinosaurs disappeared, 一种说法是恐龙消失后，
the ancestral ostrich didn't need to fly 祖传的鸵鸟不需要飞
because nothing was hunting it. 因为没人在猎杀它。
And because there was an abundance of food 因为那里有很多食物
at runway level. 在跑道上。
Ostriches turned in their pilot's license 鸵鸟交了飞行员执照
and became grazers. 变成了食草动物。
They turn their attention to life on the ground. 他们把注意力转向地面上的生活。
But because their wings didn't just fall off, 但因为它们的翅膀不只是掉下来，
the ostrich found new uses for them, 鸵鸟为它们找到了新的用途，
including one of the oddest mating rituals 包括一个最奇怪的交配仪式
in the animal kingdom. 在动物王国。
The males perform a flamboyant mating dance, 雄性会表演华丽的交配舞蹈，
using their wings heavily in their choreography. 在他们的舞蹈中大量使用翅膀。
They blow up their neck like a balloon 他们像气球一样把脖子炸开
and most turn bright red in the process. 大多数在这个过程中会变成鲜红色。
The male crouches down 雄性蹲下
and, kind of, awkwardly gets on top of a female 而且，有点，笨拙地爬到了一个女人的身上
and sways back and forth while fluttering his feathers. 在摆动羽毛的同时来回摇摆。
It's a peculiar-looking affair. 这件事看起来很奇怪。
But since we still have ostriches, it must be working. 但既然我们还有鸵鸟，它一定在起作用。
Why be boring when you can be that flamboyant? 当你能那么张扬的时候，为什么要无聊呢？
And the result of that wacky dance? 那古怪舞蹈的结果呢？
Giant prehistoric-looking eggs. 巨大的史前蛋。
Ostriches have the largest eggs 鸵鸟有最大的蛋
in the contemporary bird kingdom. 在当代鸟类王国。
Before that, the elephant bird, 在那之前，象鸟，
which was like a bigger version of an ostrich 就像鸵鸟的更大版本
and went extinct around the 17th century, 大约在17世纪灭绝了，
laid a doozy of an egg- 下了一个蛋-
a foot long and 8 inches wide- 一英尺长，八英寸宽-
that's bigger than your head. 比你的头还大。
But the ostrich egg is still something. 但是鸵鸟蛋仍然是个东西。
It's 2,000 times bigger than the smallest bird egg, 它比最小的鸟蛋大2000倍，
which belongs to the hummingbird. 属于蜂鸟的。
One ostrich egg is equal to about two dozen chicken eggs. 一个鸵鸟蛋大约等于两打鸡蛋。
That's 3 pounds of egg; that's a big omelette. 那是3磅鸡蛋；那是一个大煎蛋。
And ostrich eggs are so strong 鸵鸟蛋很强壮
that an average-sized person can stand on top of them 一个中等身材的人可以站在上面
and they won't break. 它们不会破裂。
These strange birds 这些奇怪的鸟
also have some pretty unusual nesting rituals. 还有一些非常不寻常的筑巢仪式。
Ostriches live in a pride of about 10 birds 鸵鸟生活在大约10只鸟的骄傲中
and within that is a harem. 里面有个后宫。
There's an alpha male and a dominant female 有一只雄性和一只雌性
and then other females below her. 然后是她下面的其他女性。
Each hen can lay between 5 and 10 eggs 每只母鸡能下5到10个蛋
and all the hen's eggs go into one nest, 所有的鸡蛋都放在一个窝里，
which is really just a shallow depression in the ground. 实际上只是地面上的一个浅凹陷。
But it's not one big happy family. 但这不是一个幸福的大家庭。
The head female wants nothing of the other females' eggs, 头母不想要其他雌性的卵，
so she'll kick them out of the middle of the nest, 所以她会把他们踢出巢穴，
leaving them on the edge, where they are vulnerable to predators 把它们留在边缘，在那里它们很容易受到捕食者的攻击
and unlikely to get properly incubated. 也不太可能得到适当的孵化。
Luckily, the ostrich can easily protect their nest too, 幸运的是，鸵鸟也能很容易地保护它们的巢穴，
as they don't need to get up for a drink of water very often. 因为他们不需要经常起来喝水。
Ostriches are a lot like another strange-looking animal, 鸵鸟很像另一种奇怪的动物，
the camel. 骆驼。
In fact, the scientific name for the ostrich 实际上，鸵鸟的学名
is Struthio camelus , which means "ostrich camel". 是骆驼，意思是“鸵鸟骆驼”。
They get a lot of water from their food 他们从食物中得到很多水
and can regulate their temperature and water loss 可以调节它们的温度和水分流失
because they don't sweat. 因为他们不出汗。
Also like camels, they have big eyes 像骆驼一样，它们有一双大眼睛
with special eyelids to protect them from sand. 用特殊的眼皮保护它们不受沙子的伤害。
Some say their eyeball is bigger than their brain 有人说他们的眼球比大脑还大
but that's not nice or fair. 但那不好也不公平。
Watching an ostrich, you might think they have a small brain... 看着一只鸵鸟，你可能会认为它们的大脑很小。。。
But they're actually pretty smart. 但他们其实很聪明。
An what they may lack in finesse, 他们可能缺乏的技巧，
they more than make up for in speed and personality. 他们不仅弥补了速度和个性。
That said, they still like shinny things. 也就是说，他们仍然喜欢闪亮的东西。
On the coast of Peru and Chile lives a handsome bird 在秘鲁和智利的海岸上生活着一只漂亮的鸟
with immaculate grooming habits. 有着完美的梳妆习惯。
The Inca tern's plumage is legendary. 印加燕鸥的羽毛是传说中的。
But under that fa?ade 但在那个足总的领导下？艾德
is a surprisingly chivalrous and brave bird. 是一只令人惊讶的骑士和勇敢的鸟。
Preferring to nest on rocky cliffs 喜欢在岩石峭壁上筑巢
and sandy beaches along the West Coast, 西海岸的沙滩，
they live in massive colonies of thousands of birds, 它们生活在成千上万只鸟的大群体中，
usually living alongside humble penguins. 通常和卑微的企鹅一起生活。
These seabirds are known for their mustache-like tufts, 这些海鸟以它们的小胡子而闻名，
making them look like proper gentleman. 使他们看起来像正派的绅士。
All that's missing is a cigarette holder and a martini. 只缺一个烟嘴和一杯马提尼。
They're also very easy to spot 它们也很容易被发现
thanks to their impressively manicured bright red feet, 多亏了他们精心修剪的鲜红的脚，
making this fellow one of the most unusual-looking birds 使这家伙成为最不寻常的鸟类之一
in the animal kingdom. 在动物王国。
The mustache is made of long feathers 胡子是长羽毛做的
underlined by a fleshy wattle. 有肉质的垂饰。
It's for more than just decoration though. 不过，这不仅仅是装饰。
Much like a buck's antlers, 就像雄鹿的鹿角，
the mustache is for display and sexual selection. 胡子是用来展示和性别选择的。
That's right, mustaches are sexy again. 没错，胡子又性感了。
But unlike antlers, both male and female Inca terns 但与鹿角不同的是，雄性和雌性印加燕鸥
have these dashing decoration above their beak. 把这些漂亮的装饰物放在他们的嘴上。
In both sexes, it's to show off that they're mature 无论男女，都是为了炫耀自己成熟
and healthy enough to mate. 健康到可以交配。
The bigger and longer the 'stache, 斯泰西越大越长，
the healthier the bird. 鸟越健康。
And presumably, the healthier the chicks they can produce. 据推测，它们生产的小鸡越健康。
Once they produce those chicks, 一旦他们生了那些小鸡，
the males and females incubate the eggs 雌雄孵化卵
and then share parenting and fending duties. 然后分担养育子女的责任。
Because after all, this is a progressive bird 因为毕竟，这是一种进步的鸟
and a gentleman never abandons his nest. 君子不弃巢。
Most of their nests can be found high up on cliffs 他们大多数的巢穴都在高高的悬崖上
on the west coast of South America, in hollows and burrows. 在南美洲西海岸的一个洞穴里。
Here, these impeccable-looking birds aren't afraid to get wet. 在这里，这些看起来无可挑剔的鸟不怕淋湿。
They can often be seen hovering in groups over schools 他们经常成群结队地在学校上空盘旋
of anchovies and small fish, 凤尾鱼和小鱼，
every so often making impressive dives for their dinner. 他们经常在晚餐时做令人印象深刻的跳水动作。
So there's more to these dashing birds than their looks. 所以这些飞鸟的魅力远不止外表。
They're daring and devoted to their families. 他们很勇敢，对家人很忠诚。
And hey, just because you've settled down, 嘿，就因为你安定下来了，
doesn't mean you can't have style. 但这并不意味着你不能有自己的风格。
The marabou stork is not the best-looking bird in the world. 鹳不是世界上最漂亮的鸟。
And their eating habits live up to their appearance 他们的饮食习惯和外表相符
but they are the neighbor you want. 但他们是你想要的邻居。
They'll eat dead animals 他们会吃死动物
and have even been known to nibble on flamingos. 甚至被认为是啃火烈鸟。
From behind, they kind of look like an undertaker. 从后面看，他们有点像殡仪馆的人。
From the front, they don't get much better. 从前面看，他们并没有变得更好。
They're not old or sick or dying, 他们没有老，没有病，也没有死，
this is just how they look. 这就是他们的样子。
These strange-looking birds are hard to miss. 这些看起来奇怪的鸟很难错过。
They can grow up to 5 feet tall. 它们可以长到5英尺高。
And with a wingspan of over 12 feet, 翼展超过12英尺，
the marabou stork boasts the second largest wingspan 马拉布鹳拥有第二大翼展
of any living bird, where the albatross sporting the biggest. 在任何一种活鸟中，信天翁的体型最大。
At 20 pounds, they're also one of the heaviest birds 它们重20磅，也是最重的鸟之一
that can still fly. 它还能飞。
Soaring at up to 13,000 feet in the air. 在高达13000英尺的高空翱翔。
That's partially thanks to their hollow leg bones 部分原因是他们的腿骨凹陷
and toe bones, which cuts back on quite a bit of weight. 脚趾骨，可以减轻很多重量。
Speaking of their gangly feet, they're supposed to be dark grey 说到他们瘦长的脚，他们应该是深灰色的
but because of a build-up of bird poop, 但由于鸟粪的堆积，
they tend to look mostly white from a distance. 从远处看，它们大多是白色的。
Though it may seem that hygiene is not for these birds, 虽然看起来卫生不适合这些鸟，
they defecate on their legs to cool down. 他们用腿排便以降温。
This pink balloon under their bill 他们帐下的这个粉红色气球
is actually called a gular sac. 实际上被称为古拉囊。
When a marabou stork wants to appear threatening 当一只白鹳想表现出威胁
and dangerous to other storks, it inflates the sack. 对其他鹤来说很危险，它会使袋子膨胀。
It also helps them regulate temperature 它还能帮助他们调节温度
because this pink inflatable sack 因为这个粉红色的充气袋
is packed with blood vessels. 充满了血管。
With no feathers to insulate the heat, 没有羽毛来隔热，
it is released, helping to keep them cool- 它被释放了，帮助他们保持冷静-
that strange sac is practical. 那个奇怪的囊是实用的。
The naked head and neck are not the result of a bad haircut, 裸露的头和脖子不是糟糕发型的结果，
these storks feed on dead animals, 这些鹳以死动物为食，
just like their cousins, the vultures. 就像他们的堂兄弟，秃鹫。
If they had a feathered head, 如果他们头上有羽毛，
it would just get clogged with blood and guts 只会被血和内脏堵塞
during dinner time. 在晚餐时间。
They also eat scraps and really anything they can find. 他们也吃剩菜和他们能找到的任何东西。
Like frogs, eggs and some say, even shoes sometimes, 像青蛙，鸡蛋还有一些人说，有时甚至是鞋子，
now that's putting a foot in your mouth. 现在你的嘴被踩了一只脚。
To maximize their scavenging opportunities, 为了最大限度地利用它们的觅食机会，
they tend to live their garbage dumps, 他们喜欢住在垃圾堆里，
fishing villages and slaughter houses, 渔村和屠宰场，
not exactly hot markets for real estate 不完全是房地产市场的热点
and easy to find a place. 而且很容易找到地方。
When it's not scavenging dead animals or garbage, 当它不清理死动物或垃圾的时候，
it's playing house. 在玩房子。
Collecting sticks to build a nice comfy nest 收集树枝建一个舒适的巢
to keep his partner happy. 让他的搭档开心。
Strangely enough, marabou storks can often be found 奇怪的是，马拉布鹳经常被发现
heading towards fires, 朝着火焰前进，
not to be heroic and help put out the fire though. 但不是为了英勇救火。
They've learned that's a very efficient way 他们知道这是一个非常有效的方法
to find dead or dying animals to feast on. 寻找死去或垂死的动物来享用。
Now, that's a hot meal. 现在，那是一顿热饭。
Their massive wedge-shaped bill and elastic stomachs stretch 它们巨大的楔形喙和有弹性的胃伸展着
to fit whatever they find. 去适应他们找到的一切。
They're not picky, eating almost 2 pounds of food each day. 他们不挑剔，每天吃将近2磅的食物。
As gross as they seem, the marabou stork 尽管看起来很恶心，马拉布鹳
plays an important role in the ecosystem. 在生态系统中扮演着重要的角色。
They are waste removal engineers, 他们是废物清除工程师，
cleaning up garbage and dead animals. 清理垃圾和死动物。
It's a dirty job but someone has to do it. 这是一项肮脏的工作，但总得有人去做。
Just be grateful that the marabou stork volunteered 感谢马拉布鹳自愿
to clean up the neighborhood. 清理社区。
The marabou stork couldn't care less about appearances 马拉布鹳不在乎外表
but in India and Sri Lanka lives a bird 但是在印度和斯里兰卡生活着一只鸟
who's paying very close attention to how it looks. 他非常关注它的外观。
But this club is gentleman only. 但这个俱乐部是绅士的。
Like the dandies of the 19th century, 就像19世纪的花花公子一样，
these suave male birds grew up cultivating their vanity. 这些温文尔雅的雄鸟是在培养虚荣心的过程中长大的。
With peacocks, it's all about the show. 有了孔雀，一切都是为了表演。
Strutting around with crowns of blue, 戴着蓝色的王冠昂首阔步，
these flamboyant creatures have only one thing on their minds, 这些华丽的生物只有一个想法，
looking good for the ladies. 很适合女士们。
Peacocks have been romanticized throughout history, 孔雀在历史上一直被浪漫化，
even by Shakespeare. 即使是莎士比亚。
They're often used to display wealth 他们经常用来炫耀财富
and are revered as a symbol of immortality. 被尊为不朽的象征。
Technically speaking, 从技术上讲，
the long-tailed birds are called peafowl 长尾鸟叫孔雀
and they only have long tails for part of the year. 它们一年中只有很长的尾巴。
Only males are peacocks as females are peahens. 只有雄孔雀是雌孔雀。
Always looking for an opportunity to show off, 总是在找机会炫耀，
they gather to munch on plants and small insects 他们聚集在一起吃植物和小昆虫
they find on the ground always in their best attire. 他们在地上总是穿着最好的衣服。
Males spend a lifetime 男性一生
putting themselves at risk with predators. 把自己置于捕食者的危险之中。
Flaunting a magnificent train of feathers on their back end, 在它们的尾部炫耀一列华丽的羽毛，
they're not exactly blending in. 他们并没有完全融入其中。
But it's not for the sake of their suits, 但这不是为了他们的西装，
it's for the sake of showing off to the females. 是为了向女性炫耀。
But what's the point of this ostentatious display 但这种炫耀的表现有什么意义
of feathers by the males? 雄性的羽毛？
It is a legitimate attempt 这是合法的尝试
at charming a potential mate in a competitive world. 在竞争激烈的世界里吸引一个潜在的伴侣。
In a grandiose performance, 在一场宏大的表演中，
the peacock fans his large train of feathers across his back, 孔雀把一大串羽毛扇在背上，
creating an impressive wall of color 创造令人印象深刻的彩色墙
to woe the onlooking peahen. 让旁观者伤心。
The fan, made up of 150 feathers, 扇子，由150根羽毛组成，
is more than 60% of his total body length. 超过他身体总长度的60%。
The outrageous mating ritual is developed 疯狂的交配仪式发展起来了
into an elaborate and technical dance. 变成一种精巧的技术舞蹈。
If the peacock suspects the peahen is interested, 如果孔雀怀疑雌孔雀感兴趣，
he turns around and actually shakes his booty at her. 他转过身来，对她摇了摇战利品。
But there's more to this spectacle 但这场面还有很多
than simply showing off. 不仅仅是炫耀。
Females choose their mates according to the size, color 雌性根据体型、颜色选择配偶
and quality of the feathers. 羽毛的质量。
They're very particular. 它们很特别。
The eyespots on each feather in particular 特别是每根羽毛上的眼点
are essential to these courtship displays. 对这些求爱的表现是必不可少的。
Each feather features an iridescent eye-like pattern 每根羽毛都有一个像眼睛一样的彩虹图案
that is indeed eye-catching. 这确实很吸引眼球。
Females, it seems, 女性，看起来，
are especially fond of the blue green patches in each eyespot. 特别喜欢每一个眼点上的蓝绿色斑点。
And we can only imagine how things appear to a peahen. 我们只能想象事情在一只雌孔雀看来是怎样的。
Peafowl have refined color vision, 孔雀有着精致的色彩视觉，
different than humans, making the contrast 与人类不同，形成对比
in the eye markings on the peacock's feathers 孔雀羽毛上的眼纹
even more pronounced. 更加明显。
The mating dance of the peacock 孔雀的交配舞蹈
is the ultimate display of sexual selection. 是性选择的终极表现。
Females choose the peacock with the most fantastic fan 雌性选择扇子最神奇的孔雀
because the nicer the tail, the better the genes. 因为尾巴越漂亮，基因就越好。
So getting some tail means a lot more for these birds. 所以弄到尾巴对这些鸟来说意味着更多。
An impressive male can actually mate with several females 一个令人印象深刻的雄性实际上可以和几个雌性交配
who lay three to five eggs each. 每个人下三到五个蛋。
Females, of course, are the more practical sex, 当然，女性更实际，
needing to avoid predators while incubating their eggs. 在孵蛋的时候要避开捕食者。
Peahens sport a dull-looking coat in order to blend in. 为了混在一起，豌豆母鸡穿上一件看起来很单调的外套。
It's a sensible look for survival. 这是求生的明智之举。
But if peacocks fail to harness the beauty of their tails, 但是如果孔雀不能驾驭它们美丽的尾巴，
their lineage will end with them, 他们的血统将随着他们而结束，
leaving them sad and beautiful with no one to appreciate them. 让他们悲伤和美丽，没有人欣赏他们。
Maybe then they'll go for a solo flight of remorse. 也许他们会独自一人去忏悔。
Yes, believe it or not, these birds can fly. 是的，信不信由你，这些鸟能飞。
In fact, the peacock is considered 事实上，孔雀被认为
one of the largest flying birds 最大的飞鸟之一
because of the reach of its tail. 因为它的尾巴够得着。
But don't expect to see it fly very often. 但别指望它经常飞。
Peacocks don't exactly like to tousle their feathers, 孔雀不喜欢乱动羽毛，
just the opposite, of course. 当然，恰恰相反。
But sometimes, all that primping may have truly been in vain. 但有时，所有的打扮可能真的是徒劳无功。
Most birds have small bills. 大多数鸟有小喙。
But then, there's the hornbill. 不过，还有犀鸟。
It has a huge one. 它有一个很大的。
But this noble creature also has a huge soft spot 但是这个高贵的生物也有一个巨大的弱点
for love and family. 为了爱和家庭。
(Hornbill cackling) （犀鸟咯咯叫）
They say, size doesn't matter, 他们说，大小不重要，
but no one told the hornbill. 但没人告诉犀鸟。
They're known for their comically large bills. 他们以滑稽的大账单而闻名。
They're even named for it. 他们甚至以此命名。
It's an incredible multipurpose tool, 这是一个难以置信的多用途工具，
helping them fight, clean, eat and construct their nests. 帮助他们打仗，打扫，吃饭和筑巢。
Why it's so large is a mystery. 为什么它这么大是个谜。
The bill is so enormous that the hornbill's first 这张钞票太大了，犀鸟的第一张
and second vertebrate are fused together 第二个脊椎动物融合在一起
to help them carry the extra weight. 帮助他们承受额外的重量。
They're the only bird with this unique neck adaptation. 他们是唯一有这种独特的颈部适应的鸟。
They also have incredibly strong neck muscles, 他们的颈部肌肉也非常强壮，
making the bill even bigger in some species. 使某些物种的账单更大。
The impressive piece on top is called "the cask". 上面令人印象深刻的一块叫做“木桶”。
It's a hollow piece of carotin, sometimes reinforced with bone 是一块中空的胡萝卜素，有时用骨头加固
which is there to keep the bill sturdy. 这是为了使账单坚固。
On some birds, the cask alone 在一些鸟身上，只有木桶
can weigh up to 10% of their body weight- 体重可达体重的10%-
that's like balancing a 3-month-old baby on your head. 这就像在你的头上平衡一个3个月大的婴儿。
It's thought the cask acts like a vibrating chamber 有人认为木桶就像一个振动室
to help the hornbill's voice project through the forest. 帮助犀鸟的声音穿过森林。
(Cackling) （咯咯地笑）
Hornbills have binocular vision, 犀鸟有双目视觉，
which means their forward-facing eyes' 也就是说他们前视的眼睛
fields of view overlap in front. 视野在前面重叠。
This helps them focus on the food items 这有助于他们专注于食物
they're picking up with their bill, 他们正在付账单，
allowing for intense precision. 允许高度精确。
But if they catch food at the tip of their beak, 但如果它们用嘴尖捕捉食物，
their tongues aren't long enough to bring it into their mouths, 他们的舌头不够长，不能把它带到嘴里，
so they have to tip their heads back to gulp it down. 所以他们必须把头向后仰才能把它吞下去。
That helps them eat some more dangerous meals 帮助他们吃更危险的食物
like scorpions without getting stung 像蝎子一样不被蜇
because the scorpion goes down so fast. 因为蝎子下降得太快了。
For the hornbill, romantic gestures are big too. 对犀鸟来说，浪漫的姿态也很重要。
A male will flirt with a female 男人会和女人调情
by bringing her food for a whole year to build trust. 带了一整年的食物来建立信任。
Trust is important when you mate for life like these lovebirds. 当你像这些恋人一样终生伴侣时，信任是很重要的。
Once they mate and the female lays eggs, 一旦它们交配，雌性产卵，
she stays hold up inside a tree hollow, 她呆在树洞里，
with the opening sealed except for a tiny hole to feed through. 除了一个可以穿进去的小洞外，都是密封的。
His job while she's in there caring for their young 当她在那里照顾他们的孩子时
is to deliver them delicious food. 就是送他们美味的食物。
This helps protect the chicks from predators 这有助于保护小鸡免受捕食者的侵害
until they're old enough to defend themselves 直到他们长大可以保护自己
outside of the hollow. 在山谷外面。
The male hornbill really does get to his mate 雄犀鸟真的找到了他的伴侣
through her stomach 通过她的胃
and in turn, she protects their brood. 反过来，她保护他们的孩子。
After all is said and done, that big bill is impressive 说来说去，那笔大账真让人印象深刻
but it's not as impressive as their love. 但这并不像他们的爱那么令人印象深刻。
Devoted to each other for life, hornbills really are love birds. 为了彼此的一生，犀鸟真的是爱鸟。
All of these bizarre looking birds 所有这些看起来奇怪的鸟
are beautifully adapted to their environments. 非常适合他们的环境。
The fast and flamboyant ostrich, the dapper and daring Inca tern, 快而华丽的鸵鸟，敏捷而大胆的印加燕鸥，
the scrappy marabou stork, the iridescent peacock 好斗的鹳，彩虹色的孔雀
and the hopelessly romantic hornbill 和无可救药的浪漫犀鸟
are all proving there's a lot more to them than meets the eye. 所有这些都证明了他们所拥有的远不止眼前所见。
These are true survivors. 他们是真正的幸存者。