Chickens can't speak, but they can definitely make themselves heard. Most people who have visited a poultry farm will recall chicken vocalization – the technical term for clucking and squawking – as 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.

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 ...

A new paper in the journal Birds documents what may be a previously undescribed Pine Grosbeak vocalization in a pattern that ...

A sweeping analysis of nearly a million recordings from 48 national parks in the U.S. shows that birds vocalize more in the presence of airplane noise. The data collected by scientists at the U.S.