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 ...

Birds don't just sing for beauty, their voices carry messages, warnings, and even regional dialects that reveal a hidden world of communication. Bird sounds offer insight into how intelligent and ...

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.

Sofia Marie Haley does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...