This is bird note.

The common raven is our largest songbird bird.

The common raven is our largest songbird and it has a voice to match its size.

We visited ravens in the company of wolves and in myth taking control of the tides,

changing the course of a river, even placing the sun in the sky.

Ravens are seen as tricksters in many traditions.

But ravens have their softer side too.

Common ravens probably mate for life.

And in the same way that a human couple sometimes has to work to maintain their attachment.

A pair of ravens exhibits behaviors that strengthen their relationship or pair bond.

Throughout the year, pair of ravens may soar wing-tip to wing-tip, swooping in

unison, tumbling through the sky. During courtship, the pair will often sit side by side, gently preening each other's

feathers. And during that ritual, they may make these warbling sounds.

Raven nestlings sometimes make this same sound after they've been fed.

Compared to the usual raucous raven calls, this one is soothing to adults and to their young.

It's called a comfort sound.

For Bird Note, I'm Michael Stein. You're going to be.