Dr. David Bashwiner

It does it for like an hour or more all night long.

Then and it has two other sounds that it makes.

So it does that by shaking its swim bladder.

And that's like a roughly 100 hertz pitch.

And it shakes the muscles at about 100 times a second.

But it can do that same thing.

It can go... And that's like a grunt train.

And it has one more vocalization, which is...

It's where it's modulating both the frequency and the amplitude.

And that latter one is called the growl.

So the grunt and the growl are both agonistic in science, but it's like, get out of here.

And the hum is alluring.

And that is much more like, like that thing, even though it's one tone, it's not complex.

It functions like an attractive beacon.

And so that is like a song.

The other two things are regulating the behavior of just others that are near them.

I had this revelation when I was...

reading this really cool article about the zebra finch so zebra finch is like one of the best studied birds and it's a bird that learns its song so when you're talking about how the learning process works for birds the zebra finch is just like a perfect

preacher to study and they have only a single song.

They make about 12 other different types of sounds.