Over the years, there have been so many conflicting trees of birds, she told me ... into aerodynamic insectivores with nearly identical silhouettes, but traits such as their vocal organs ...

There are also nonvocal sounds, Dr. Webster said: Some birds snap their wings, some drum on trees and others rub their feathers together as if playing the violin. The purpose of these sounds ...

By analysing the genomes of more than 360 bird species, our study has identified the fundamental relationships among the major groups of living birds. The new family tree overturns some previous ...

Throughout the night, great potoos emit a loud, moaning growl that has earned the bird a mythical status, with some communities believing the sounds to be children calling for lost parents.