BirdNote Daily

Marbled Murrelets are secretive little birds that spend most of their lives at sea — but they breed in redwood forests! While North America’s remaining redwoods are protected in parks, predators are moving in. Stellar’s Jays and Common Ravens are just two opportunists that thrive on our food that human visitors leave behind. And once they’ve eaten our leftover trail mix, their next meal may be a murrelet egg or chick. The Keep It Crumb Clean campaign is a state park initiative that’s educating people about the importance of leaving no food unattended. That means storing food in secure containers, disposing of waste in animal-proof bins, and cleaning up all food — even crumbs!

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By moving from the faster high air to slower low air, or vice versa, an albatross can propel itself forward. In a series of sinuous loops, the albatross surfs the wind, up and down, repeating the pattern over and over again as it moves thousands of miles across the ocean.

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Adriaan Dokter is an aerial ecologist who designs tools to study how birds migrate. On the Bring Birds Back podcast, Adriaan traces his fascination with flight back to an early experience with common birds. Listen to the full episode here and on your favorite podcast app.

More info and transcript at BirdNote.org.

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Some ducks don't sound like ducks at all. Some — like the Harlequin — squeak. Harlequins are unique in other ways, too. Quick and agile in rushing white water, they dive to the bottom of mountain streams for food, and use fast-flowing rivers for breeding. If you're lucky enough to spot a Harlequin Duck, you may guess how it got its name. Dressed in vivid multi-colored patches, "harlequin" is the jester of traditional Italian comedy.

More info and transcript at BirdNote.org.

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Hummingbirds use their long tongues to sip nectar from flowers. They’re able to roll their tongues into a tube-like shape. Since the 1800s, scientists thought those tongues worked through capillary action, like how water instantly rises into a straw in a full cup. But when scientists spent years using slow-motion cameras to capture hummingbirds drinking in greater detail, they uncovered a completely different story: the tongues act like a tiny but powerful pump.

More info and transcript at BirdNote.org.

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