This is bird note.

A flock of geese wings across the sky in perfect v-shaped formation. It's one of the most enduring

images of migration. Step outside and you might hear them, migrating after dark or flying

above the clouds, invisible.

The rhythmic honking of Canada geese is what you probably hear most often.

While the calls of white-feathered snow geese are more sharp and nasal.

The voices of greater white-fronted Geese sound like laughs or yelps.

Cackling geese, which look like pint-sized Canada geese, have a rhythmic higher-pitched call.

Geese migrate north between February and April, making stopovers along the way to rest and eat.

Most are bound for their breeding grounds in the far north.

But we'll hear them again soon on their way back south in October.

For Birdnote, I'm Michael Stein.

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