Canada

White throated sparrows change their tunes from a three note to a two note

VANCOUVER — White-throated sparrows are changing their tune — an unprecedented development scientists say has caused them to sit up and take note.

Ken Otter, a biology professor at the University of Northern British Columbia, whose paper on the phenomenon was published on Thursday, said most bird species are slow to change their songs, preferring to stick with tried-and-true tunes to defend territories and attract females.

But the shift to this new tune went viral across Canada, travelling over 3,000 kilometres between 2000 and 2019 and wiping out a historic song ending in the process, he said.

“The song is always described as being ‘Oh My Sweet Canada Canada Canada Canada — so that Canada is three syllables. It’s a da-da-da, da-da-da, da-da-da, da-da-da sound. That’s the traditional description of the song going back into early 1900s,” Otter said in an interview Wednesday.

But now, the song has changed.

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