Most birds have distinct calls that tend to stay the same. It’s how birders can recognize a species without seeing it. But new research shows these tunes can change. Over the course of two decades, ...

Even if you’re not a bird person, you probably know the jaunty song of the white-throated sparrow. It plays on loop in North America’s boreal forests, a classic as familiar as the chickadee’s trill ...

Elizabeth Derryberry has been studying the songs of white-crowned sparrows for over a decade. Her 2012 work recording and analyzing birdsongs helped demonstrate that San Francisco sparrows slowly ...

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 ...