Audio

Songbirds are changing their tunes

Canadian songbirds are changing their tunes because they're being drowned out by noise pollution. Birder Alain Clavette spoke to a researcher at the University of Manitoba to find out more.
Canadian songbirds are changing their tunes because they're being drowned out by noise pollution. Birder Alain Clavette spoke to a researcher at the University of Manitoba to find out more. 10:54