Oskar Sala, 91, the German composer and physicist who produced the eerie bird sound effects for Alfred Hitchcock’s “The Birds,” died of undisclosed causes Tuesday in Berlin. The bird cries were ...

Smithsonian Institution, Center for Folklife and Cultural Heritage, Ralph Rinzler Folklife Archives and Collections, 600 Maryland Ave., S.W., Suite 2001, Washington ...

All air-breathing vertebrates have a larynx—a structure of muscles and folds that protects the trachea and, in many animals, vibrates and modulates to produce a stunning array of sounds. But birds, ...