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Alpine Swifts Fly Nonstop Jan 31, 2025

Show notes

How long can a bird fly without touching the earth? To find out, Swiss scientists attached sensors to Alpine Swifts. The sensors showed long periods when the swifts were gliding and not flapping their wings. Were the birds asleep? Scientists don’t know for sure. It could be that Alpine Swifts sleep during the summer breeding season — and don’t sleep at all during migration. But why do they stay aloft so long? Swifts can’t perch because they have very short legs. So if they can manage it, avoiding touching down makes perfect sense.

More info and transcript at BirdNote.org.

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The Harpy Eagle Is a Huge, Powerful Hunter Jan 30, 2025

Show notes

Harpy Eagles spend their lives in tall, remote tropical forests in Central and South America, flying from tree to tree in search of food. The eagles are named for the Harpies of Greek mythology, women with the bodies of birds who, on Zeus’s command, snatched people from the earth. Since it takes many months for a nestling to mature, Harpy Eagles raise a youngster just once every two or three years.

Listen to this episode in Spanish here.

More info and transcript at BirdNote.org.

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The Verdin’s Winter Roosts Jan 29, 2025

Show notes

For small songbirds, surviving a cold winter night can be challenging. Their bodies lose heat faster than those of larger birds. So little birds have found resourceful ways to stay warm — like huddling close together with other birds. But the Verdin, a tiny bird of the Southwest, does something few other birds do to keep warm: it builds extra nests to roost in, in the winter.

More info and transcript at BirdNote.org.

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Kentucky Warbler Jan 28, 2025

Show notes

Kentucky Warblers nest in forested regions in much of the East, preferring woodlands with a dense understory, often near streams or other wetlands. These birds can use our help. As their forest habitat shrinks, it’s easier for Brown-headed Cowbirds to find and parasitize the warblers’ nests. While migrating, they are easy prey for domestic cats, so keeping cats indoors can save many warblers. And buying products like shade-grown coffee can help keep their tropical winter habitat in good shape.

More info and transcript at BirdNote.org.

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Spark Bird: Christian Cooper’s Red-Winged Blackbird Jan 27, 2025

Show notes

Christian Cooper wasn’t always interested in birds. His parents were teachers, his dad a science teacher, so nature was always part of his life. When he was a kid, his parents made him take a woodshop class, where he had to build something. So he decided to build a birdfeeder and hang it in his backyard.

More info and transcript at BirdNote.org.

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Dowitchers Get a Second Wind Jan 26, 2025

Show notes

The two American species of dowitchers, Long-billed and Short-billed, are similar in appearance but have distinctive calls. And they’re some of the continent’s most dramatic songsters. On their northern breeding grounds, Short-billed Dowitchers ascend as high as 150 feet in the air then glide slowly earthward, singing. At the end of the glide, they may take off again for another bout of song.

More info and transcript at BirdNote.org.

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Following the Honeyguide Jan 25, 2025

Show notes

The Greater Honeyguide's demanding call is not aimed at a member of its own species. Instead, the bird guides people in search of honey through the forest, directly to bee hives. The bird flies to a colony of bees living in a hollow tree. The human follower exposes the hive with an ax and takes much of the honeycomb. Then the honeyguide moves in to feast on bee larvae and beeswax.

More info and transcript at BirdNote.org.

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Rhea Nesting Is Mind-boggling Jan 24, 2025

Show notes

A typical bird nest will have maybe four to six eggs neatly arranged by the parent to hunker down on. But in one Rhea nest, you may find between 50 and 80 eggs! And they’re not all from the same set of parents. Male Rheas mate with several females and then build a single nest on the ground to hold all the eggs from each of them.

Listen to this episode in Spanish here.

More info and transcript at BirdNote.org.

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Moonwalking Manakins Jan 23, 2025

Show notes

The Golden-headed Manakin is a tiny bird with dance moves that would turn a pop star green with envy. Johanne Ryan, a nature educator who lives in Trinidad, describes this bird’s remarkable breeding display, which features a moonwalk and tail-flicks.

More info and transcript at BirdNote.org.

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Listening From Inside the Egg Jan 22, 2025

Show notes

Shorebird chicks hatch into a dangerous world, so they need to be vigilant from the start. Researchers in Australia noticed that some shorebird chicks began chirping in their final days in the egg. The chirps fell silent when the researchers played recordings of a Little Raven, which hunts for young birds. The finding suggests the chicks are listening carefully and may be able to tell threatening sounds from non-threatening ones.

More info and transcript at BirdNote.org.

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

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

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