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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

In the most recent podcast, we discussed how baby bats learn their calls from all the other bats in their crowded colonies.

And we mentioned in passing that songbirds usually get tutored directly from their dads.

So how does that avian system work?

At about 25 days, the father starts singing, in many cases, directly to the juvenile.

David Metz, a geneticist at the University of California, San Francisco.

That sort of is the onset of what's called the sensory phase of learning, where they incorporate information from their environment.

What Mets and its team wanted to know was how much of a baby bird's future musicality

is influenced by that tutoring, an environmental factor,

and how much is written in their genes.

So they studied Bengalis Finches, which sing like this.

The tempo of that song appears to vary, according to a Finch's genetics.

So they tried training baby finches with different genetic tendencies, fast, medium, or slow singing, on a synthetic

finch song, made from a library of different types of song syllables. So these are sort of, they'd be

tonal downward sweep, so, you know, or sort of broadband noisy ones like,

shh.

But when baby finches with different genetic backgrounds were trained on the resulting tune,

...