Over 20 years, scientists tracked the transformation of the traditional trill of a common bird from western Canada to Ontario. By Cara Giaimo Even if you’re not a bird person, you probably know the ...
The birds were singing something strange. Ken Otter and Scott Ramsay first noticed it in the early 2000s, when they were recording white-throated sparrows in Prince George, a city in western Canada.
Results that may be inaccessible to you are currently showing.
Hide inaccessible results
Feedback