NPR's Scott Detrow speaks with Matthew Medler of the Cornell Lab of Ornithology about the best bird sounds of 2025 from their vast collection of recordings, and why their selections made the list.

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Researchers conducted a global study of the factors that influence bird sounds, using more than 100,000 audio recordings from around the world. Birds make sounds to communicate, whether to find a ...

Oregon is home to more than 500 bird species. Portland has an annual month-long festival dedicated to the migratory Vaux's swift. The nearby Sandy River Delta boasts a blind (a special structure made ...

Part 1. 'I don't do calls' -- Crossing the sound barrier -- Tone and timpre -- Pitch and frequency -- Rhythm and timing -- Part 2. Put it all together and what have you got? -- Simple calls -- Simple ...

Each year on the first Sunday in May, International Dawn Chorus Day invites people to do something very simple: get up before ...