Traffic Noise Is Changing Birdsong and Fueling Aggression in the Galápagos

Galápagos songbirds are changing their ways, getting bolder and singing louder, because of human noise. Warblers near roads display heightened aggression when challenged, while those in quieter zones dial it down. Birds also tweak their tunes, singing at higher frequencies to cut through traffic noise. Even in low-traffic areas, these shifts suggest that human activity [...]

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