Swifts Roost in Chimneys

09/03/23 • 1 min

1 Listener

What could bring crowds of people out after sunset on a September evening to stare at ... a chimney? Swifts, of course! Scores of swifts form a funnel-shaped cloud above the right kind of chimney, then they begin their descent. First one, then a few more, then dozens, then hundreds swirl right down into the chimney. You can help Chimney Swifts and Vaux's Swifts by providing a roosting tower.

More info and transcript at BirdNote.org.

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More info and transcript at BirdNote.org.

Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks.

BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.

Previous Episode

The Alula

Adjusting the flaps on an airplane’s wing allows a pilot to control lift and drag — and the design of these flaps was inspired by the wings of birds. All flying birds have what’s called an alula on each wing. At the center of the front edge of the wing is a structure covered with three to five feathers that functions much like a flap on an airplane’s wing. The alula helps create lift and also prevents stall when a bird comes in for landing.

More info and transcript at BirdNote.org.

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Next Episode

Migrations: The Triumphant Comeback of the Aleutian Cackling Goose

1 Recommendations

Aleutian Cackling Geese, which have a slighter build and shorter beak than Canada Geese, build their nests on a chain of islands off the western coast of Alaska. In the 1700s, fur traders introduced foxes to the islands, nearly wiping out the geese. For decades, they were believed to be extinct. But in the 1960s, a biologist discovered about 300 birds nesting on Buldir Island. Habitat protections have allowed their populations to recover.

More info and transcript at BirdNote.org.

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BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.