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Thank you. and quote Science Podcast to receive special offers. Welcome to the Science Podcast for January 15, 2016.

I'm Sarah Crespi.

In this week's show, Ann Gibbons talks about hunting mammoths 45,000 years ago,

and David Grimm is back with the latest from our online daily news site.

Support for the Science Podcast is provided by AAAS, the American Association for the Advancement of Science. Now we have David Grimm, editor for our of science.

Now we have David Grimm, editor for our daily news site.

He's here to talk about some of the most interesting stories from online this week.

First up, we have a story on brave ladybirds.

Not all songbirds sing.

In fact, 30% of songbird species only the male sing, and the females keep it quiet. In new research out this week, it seems that this silence might be an important defense against predators.

What other reasons might songbirds have for their silence?

Like sadness, Dave?

Well, protection, trying to keep their location, specifically the location of their nest, hidden.

That's a pretty strong motive.

And this study focused on fairy wrens, adorable little Australian songbirds.

What kind of singing do they do?

...