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They are very unlike a bird that you typically think of sitting at a bird feeder.

You know, definitely not that kind of bird.

I'm Flora Lichten with Scientific Americans Science Quickly.

Today, episode three of our four-part fascination on really big birds.

We're going on a gargantuan goose chase.

I love talking about these big birds because most people think ostrich and they think that's big.

But actually, they were real giants around at one time.

This is Anusia Chinami-Turan of the University of Cape Town in South Africa.

And she's talking about the Dramornethids.

That's their scientific name.

But in big bird circles, you'll hear them called Thunderbirds.

Their name the Thunderbirds is really quite wonderful because kind of immediately you can

understand these really large animals coming.

Thunderbirds lived in Australia and they had a long run.

The earliest members of the group date back 50 million years or so and one species persisted

to about 40,000 years ago.

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