Science
Canada’s Sparrows Are Singing a New Song. You’ll Hear It Soon. – The New York Times
Over 20 years, scientists tracked the transformation of the traditional trill of a common bird from western Canada to Ontario.
But as in the human world, those who mix novelty with familiarity occasionally find success, and their new song circulates through a particular community.
Usually, it stays there, and Dr. Otter and …
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