Birds separated by vast geographic distances and millions of years of evolution share a remarkably similar learned vocal warning to identify parasitic enemies near their nests, an international team ...

The relationship between sounds in words and their meaning is thought to be mostly arbitrary. Some linguists and behavioural ecologists, however, argue that the instinctive vocal responses that humans ...

I approach a flock of mountain chickadees feasting on pine nuts. A cacophony of sounds, coming from the many different bird species that rely on the Sierra Nevada's diverse pine cone crop, fill the ...

Human speech arises courtesy of some significant neural horsepower. Different areas of the brain are involved in determining the meaning that’s desired, finding the words to express it, and then ...

Add Yahoo as a preferred source to see more of our stories on Google. Mountain chickadees are unusual in having more complex calls than songs. Vladimir Pravosudov I approach a flock of mountain ...