Not all pet birds have the physical or cognitive ability to learn songs, and understanding the difference can help owners set ...

Birds are the master vocalists of the animal kingdom. They can make a remarkable variety of sounds. But why is a barred owl more of a baritone, while a cedar waxwing is a soprano? And what influences ...

Researchers conducted a global study of the factors that influence bird sounds, using more than 100,000 audio recordings from around the world. Birds make sounds to communicate, whether to find a ...

Foreward, by K. Z. Lorenz.--Tonal quality of bird sounds, by P. Marler.--Experimental studies in the ontogeny of avian vocalizations, by M. Konishi and F. Nottebohm.--Song as a reinforcer, by J. G.