Artículos de revistas
Repertoire of the acoustic communication of the azure jay Cyanocorax caeruleus (Vieillot) (Aves, Corvidae)
Registro en:
Revista Brasileira de Zoologia. Sociedade Brasileira de Zoologia, v. 10, n. 4, p. 657-664, 1993.
0101-8175
S0101-81751993000400011
10.1590/S0101-81751993000400011
Autor
Anjos, Luiz dos
Vielliard, Jacques M. E.
Institución
Resumen
The vocal repertoire of the Azure Jay Cyanocorax caeruleus (Vieillot, 1818) is approached from a quali-quantitative point of view. The qualitative analysis was carried out both in the field and in captivity: the quantitative analysis was made only in captivity. Social acoustic communication in the Azure Jay is achieved through the use of two types of call: basic and intermediate calls. Fourteen basic calls are identified and presented through sonograms: the sotto voce song (courtship call) is related only to courtship and the social call is interpreted as the song in the Azure Jay. The intermediate calls are recombinations of the basic calls uttered during an alteration in motivation level. Examples of them are presented through sonograms of vocalizations recorded during mobbing predators and intraspecific agonistic contexts. The social, social-alarm, contact, flight, proximity, threat and social identity calls were those most frequently uttered by daylight: the other calls represented around 15% of the total number of utterances. The hypothesis of the evolution in American Jays, which tends to simplification of vocal repertoire (HARDY, 1961; 1969), is analysed; C. caeruleus seems to have a small actively-used repertoire. 657 664 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)