BirdNote Daily

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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Black Rails are marsh-inhabiting birds, more often heard than seen. Many Black Rails nest in marshes along the Atlantic seaboard and in the Midwest. But in winter they concentrate in the coastal marshes of East Texas, Louisiana, and Florida, areas that face many threats. Sadly, according to the 2025 State of the Birds Report, Black Rail populations are perilously low and continue to decline. In recent decades, the enactment of laws protecting wetlands has improved the bird's prospects.
More info and transcript at BirdNote.org.
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In parts of the United States, House Finches overlap with similar-looking Purple Finches. Their distinct songs help us sort them out. House Finch songs are jumbled and have a sharp, buzzy note — especially during the breeding season. Purple Finches’ songs, on the other hand, are smoother and lack the buzzy note.
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.   
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.

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