Data/hora: 11/05/2024 18:34:35

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	15/08/2000	
Data da última atualização: 	31/03/2017	
Autoria: 	FERNANDEZ-JURICIC, E.; MARTELLA, M. B.; ALVAREZ, E. V.	
Título: 	Vocalizations of the blue-fronted Amazon (Amazona aestiva) in the Chancani Reserve, Cordoba, Argentina.	
Ano de publicação: 	1998	
Fonte/Imprenta: 	Wilson Bulletin, v.110, n.3, p.352-361, 1998.	
Idioma: 	Inglês	
Conteúdo: 	The calls of the Blue-fronted Amazon (Amazona aestiva) are described and their possible function within the social organization of the species during breeding and non-breeding seasons are discussed. We identified 9 vocalizations; six ("wak-wak", "wa-wawawa", transiitons, "gu-gugu", guturals, "ka-kaka") were nonspecific and were given in several circumstances: alarm, contact, feeding, and flying. The remaining had specific contexts: "waahh" (agonistic). "grr-uip" (contact in flight), and songs (reproduction-territorial). Vocalization rates increased in alarm contexts and during the non-breeding season, probably as a result of increasing interactions between individuals. The frequency containing the greatest amount of energy was a useful variable to characterize Blue-fronted Amazon calls, particularly at the species level. The most commonly used vozalization, "wak-wak", has structural features that promote directionality and short-range transmission, enhanging its usefulness for the aggregation of individuals. It is suggested songs were derived from a process of repetition and increasing variability from gutural calls. The highly contextual variability of these calls may be due to an incompletely specialized reportoire or a vocal system based upon combinations of calls for conveying messages.	
Palavras-Chave: 	Amazonia aestiva; Parrot; Vocalizacao.	
Thesagro: 	Papagaio.	
Thesaurus Nal: 	Argentina; vocalization.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (45503-1) - ADC - SP - PP - SP16179 -  - 16179 - DIS