Northern Mockingbirds can learn to mimic the sounds of just about any bird. They mimic to show off, not to deceive. But this Thick-billed Euphonia, a tiny songbird in South America, employs what scientists call “deceitful mimicry.” When frightened by a predator near its nest, a Thick-billed Euphonia imitates the alarm calls of other birds nesting nearby. This stirs them into action as they rush in to harass the predator. The euphonia, meanwhile, sits tight while others do the dirty work.

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The Bicknell’s Thrush is known for scarcity… and promiscuity. Unlike most songbirds, the female thrush establishes a territory and then mates with males that happen by. She then lays eggs that have been fertilized by multiple different males. Many of those males will stick around and help feed the young, even if they are not their own. Each year, these little songbirds make the long journey from the Caribbean Islands to the forests of the northeastern coasts of North America.

Support for BirdNote is provided by Sarah Merner and Craig McKibben from Seattle, Washington — and generous listeners around the world.

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The Magellanic Plover is known for being a bit of an oddball. These shorebirds have a round body like a dove and even feed their young with milk produced in a part of their digestive system called the crop — a rare trait they share with doves. But genetic data revealed that Magellanic Plovers are neither plovers nor doves — they’re the only species in the family Pluvianellidae. Genetically speaking, they’re one of a kind.

This episode is dedicated to Kit Ellis, of Gig Harbor, Washington, with thanks for her generous support of BirdNote.

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All birds need to sleep — or at least snooze — sometime during each 24-hour period. And most sleep at night. A bird, like a Mallard Duckling, may turn its head around and warm its beak under its shoulder-feathers. Songbirds find a protected perch, sheltered from rain and nighttime predators. Small forest birds often spend the night in tree cavities. Ducks sleep while floating in protected bays.

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Ornithologist Bill Evans has helped us better understand the sounds that birds make as they migrate at night. Known as nocturnal flight calls, many species can be identified based on their signature sound. Using special handmade microphones left outside overnight, Evans, his colleagues and many volunteers recorded countless nocturnal flight calls — and not all of them have been identified yet. Let's take a moment to revel in the beauty of the calls that birds make as they fly high in the air.

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Do you have a question about birds? BirdNote’s Content Director Jonese Franklin says that when people bring her bird queries, she often finds the answer in a BirdNote Daily episode. Over the last 20 years, BirdNote has produced more than 2,400 episodes covering tons of topics – and there are still more stories to tell! BirdNote is an independent nonprofit that relies on the generosity of its listeners. Your support allows us to continue to make informative and immersive shows that hopefully inspire folks to fall in love with birds.

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When you provide places for migratory birds to rest and refuel, you’re helping them complete their long journeys and reach their destination safely. In a similar way, BirdNote also relies on your generosity. As an independent nonprofit, we depend on support from listeners like you to keep us going. This week, we’re asking you to make a donation of any amount to help us continue sharing the joy and wonder of birds with people everywhere.

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For many of us nature nerds, books and birds go hand in hand. That’s why BirdNote brings you conversations with award-winning writers about how birds inspire their work. This week, we are asking you to support the show so that we can keep providing daily stories about birds – and the books they’ve inspired – to your local station for free.

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Whether you know your neighborhood inside-out or you just moved and are getting to know the area, BirdNote adds another dimension to how you understand the place you live — by understanding the birds. Our hope is that by spreading knowledge about birds, BirdNote is helping you become more connected to your local ecosystems. A gift of any amount helps us continue to accomplish this goal.

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This summer, the U.S. Congress revoked more than $1 billion in previously allocated funding for public media. Because BirdNote provides its shows to stations for free, a gift to BirdNote has a multiplier effect: It helps produce a show you love and it helps provide free programming for the local public radio station you love.

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