Hummingbirds are the smallest birds. But what type of hummingbird is the smallest?

蜂鸟的鸟类。但哪种蜂鸟呢？

The Rufous hummingbird is around 7 centimetres.

红褐蜂鸟身长约7厘米。

So kind of like a hummingbird wings.

有点像蜂鸟的翅膀。

We set up a hummingbird feeder here.

我们在这儿放了一个蜂鸟给食器。

It looks like somebody made a hummingbird in a lab and said, " This would be cool."

看起来像有人在实验室里做了一只蜂鸟，然后说：“这一定很酷。”

Hummingbirds fly in the forests here, in Star Zoo.

蜂鸟在这林里飞的，在星际动物园。

" We've just got passed by a hummingbird. Did you hear that? "

“我们刚才经过了一只蜂鸟，你有没有听到？”

Why do hummingbirds have these amazing colors?

为什么蜂鸟有这些好看的颜色？

She referred to the day as " a 'hummingbird' contribution day."

她将这一天称为“蜂鸟贡献日”。

You see, hummingbirds are not hypersonic, but they are maneuverable.

你知道，蜂鸟不特超音速。但操纵性很好。

Scientists have identified a new hummingbird species in the Ecuadorian Andes.

科家在厄瓜多尔安第斯山脉发现了新品种蜂鸟。

In hummingbirds, these mutations allow this receptor to detect sugars, too.

在蜂鸟身上，这些突变也让这种受体能够检测糖。

Other animals such as hummingbirds enter hyperphagia before long migration periods.

其他动物，如蜂鸟，在长时间迁徙之前就进入了食欲过度状态。

Maybe even a couple of bumblebee bats and a bee hummingbird.

也许还有几只大黄蜂蝙蝠和一只蜂鸟。

Let me show you how this hummingbird, this rotorcraft, works.

我们来看看“蜂鸟”如何工作的。

In fact, the hummingbird is the only bird that can fly backwards.

事实上，蜂鸟唯一能后退飞行的鸟。

Why did we think that this was the time to go biomimicry and copy a hummingbird?

为什么我们会认为，现在这个进行生态模拟的时代去模拟蜂鸟？

The smallest of the hummingbirds is the Bee which is native to Cuba.

蜂鸟中的原产于古巴的吸蜜蜂鸟。

Pinnipeds-walruses, seals and sea lions. And parrots, hummingbirds and songbirds. That's it.

再加上海象、海豹和海狮等鳍足亚目动物，以及鹦鹉、蜂鸟和鸣禽。全部就这些。

Nobody knows what a hummingbird looks like, but we know what birds are.

没人知道蜂鸟长得什么样，可我们知道什么鸟。