Blurt!Commonplace Book

“No longer needing to sing at high frequencies that could be heard over the highway’s rumble, the sparrows’ songs became more expansive, occupying more of the soundscape’s ‘acoustic bandwidth.’ Even those with quiet voices became audible; in those first months, ‘you could hear four times as many birds as you could before,’ says [Professor Elizabeth] Derryberry.”

posted Friday, December 23, 2022, 8:00:00pm PST (edited)