Hummingbirds can be hard to spot.

蜂鸟可能很难瞥见。

How the hummingbirds find the nectar?

蜂鸟如何觅甘露？

Hi! Hummingbirds, I didn't expect you're here.

嗨！小蜂鸟，想不到你们会来。

Hummingbirds are the vampires of the flower world.

蜂鸟是鲜花界的吸血鬼。

It seems it is a common behaviour of hummingbirds.

看来，这是蜂鸟的一种常见行为。