title: Bird communication: two voices are better than one.
abstract: How do emperor penguins find their mates on a featureless ice flow, packed at densities of ten animals per square meter? A recent study has revealed how use of their 'two-voice' calls enables emperor penguins to locate their mates and chicks under some of nature's most extreme conditions.
authors.affiliation: Department of Neurobiology, Duke University Medical Center, Durham, North Carolina 27710-3209, USA. cbsturdy@duke.edu
authors.forename: C B
authors.initials: CB
authors.lastname: Sturdy
authors.forename: R
authors.initials: R
authors.lastname: Mooney
mesh_terms: D000819:Animal Communication; D000818:Animals; D001717:Birds / Q000502:physiology*