When it comes to flying in the animal world, the fastest flyer out there is not a bird.

It is in fact a mammal.

Oh, is it a bat?

Squirrel?

Squirts are really fast.

Peregrine falcons are really fast.

Gray-headed?

Just one of those things you can't call them birds. These are all birds that I'm going to see here. The gray-headed albatross. They're all fast. The gray-headed or great-headed? Gray-headed, G-R-E-Y. I thought you said great-head. But when it comes to level flight, you know, the Perrigan Falcons can achieve over 200 miles an hour,

but that only happens when they're dive bombing yet.

Got it.

You know, they're coming off a cliff or something, and then they're so streamlined.

If they go straight down, they can achieve speeds of, I think I've read 240 miles an hour.

Wow.

But the Brazilian freetailed bat.

Oh, there's a bat.

I'm looking at now.

Way about the size of a walnut.

Wow, that's creepy looking too.

And known for their enormous roosts.

Apparently they get into trees by the millions.

And spiral out right around sunset.

And they could go about 100 miles an hour.

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