BirdNote Daily

In February, winter still holds sway over much of North America. But in Argentina, it’s summer, and birds are in full voice. Argentina’s national bird, the Rufous Hornero, belts out a rapid trill while the Rufous-bellied Thrush sings its lovely song. In the tropical forests of northeastern Argentina, a male Red-ruffed Fruitcrow, like the one pictured here, booms out its display calls. And the cheerful, bubbly notes of an Ultramarine Grosbeak remind us that spring in North America — and the arrival of birds like the Rose-breasted Grosbeak — isn’t too far off.
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Millions of birds from around the world begin their lives in the Teshekpuk Wetlands of northern Alaska. In 2025, author and environment reporter Lynda Mapes visited the region to see how new fossil fuel developments are impacting wildlife in America’s Arctic. In this episode, Lynda recalls spending time with a family of Red-throated Loons.
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Birds have a highly efficient breathing anatomy that powers the exertion of flight. It is driven by large, thin-walled air sacs located throughout the body cavity that operate like bellows. This parabronchial system for extracting oxygen from the air has a far greater surface area than the lungs of a mammal, making sustained flight possible.
This episode is brought to you by Wild Delight Bird Food, which aims to support wild bird populations with clean, nutritious ingredients in every blend. Available at Chewy.com. 
More info and transcript at BirdNote.org.
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Flocks of Cherry-headed Conures, a species native to South America, are now found throughout San Francisco. While a local legend claims that a pet shop owner introduced them by burning the shop down, it’s more likely that that a few of these loud-mouths exasperated their owners until they “accidentally” left a window open. Sadly, wild Cherry-headed Conures are falling ill from rodent poison. A nonprofit, Mickaboo, adopts out healed rescues. 
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More info and transcript at BirdNote.org.
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Black-footed Albatrosses are masters of the high seas, but their fate is threatened by trouble on land. At their nesting grounds on Midway Atoll in Hawai‘i, rising sea levels are washing away albatross nests and eggs. Since 2021, a research team led by Julio Hernández with the Grupo de Ecología y Conservación de Islas has been working to establish a new colony for of Black-footed Albatrosses on Isla Guadalupe in Mexico. Julio explains the island’s native Laysan Albatrosses are stepping in as “foster parents” to safeguard their Hawai’ian relatives.
¡Escuche este episodio en BirdNote en Español!
More info and transcript at BirdNote.org.
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