Changing their tune: White-throated sparrows shift to a two-note-ending variant

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Changing their tune: White-throated sparrows shift to a two-note-ending variant
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Ken Otter, a biology professor at the University of Northern British Columbia, said 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

Scott M. Ramsay/The New York Times News Service

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.

“That’s why, at least within the scientific community, it’s getting so much interest. It is completely atypical to what you would predict around all the theories that you have about dialects.” “By 2014, every bird we recorded in Alberta was singing this western dialect, and we started to see it appearing in populations as far away as Ontario, which is 3,000 kilometres from us.”

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