Birds, Everything Else, Louder Now

“City streets have got noisier in the last thirty years – and birds have ‘raised their game’ to compensate. A new study has shown sparrows sing louder, just as people do when talking, in order to be heard over city traffic noise. The study has also found San Francisco streets, where the study took place, have grown noisier since the seventies, with the birds adjusting their singing to fit in with modern day commotion.”#