La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Vocal behavior of Great Curassows, a vulnerable Neotropical bird
Auteurs :	Sarah Baldo, Auteur ; Daniel J. Mennill, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (82(3) SEP 2011)
Article en page(s) :	249-258
Langues:	Anglais
Résumé :	The Cracidae rank among the most threatened families of Neotropical birds, and studies of their vocal behavior may help guide conservation and monitoring efforts. We describe the vocal behavior of Great Curassows (Crax rubra), a little-studied Cracid species currently listed as vulnerable. From 2008 to 2010, we recorded curassows in northwest Costa Rica using both handheld and automated digital recorders. Analysis of recordings revealed that Great Curassows had a vocal repertoire of five call types. Yip and bark calls are sex-specific alarm calls of short duration (0.12 and 0.08 s, respectively). The descending whistle is a longer duration alarm call (2.18 s) produced primarily by males. The snarl is a short call (0.67 s) associated with a threat display produced by adults with dependent young. The boom call was the most common Great Curassow vocalization, and was given only by males. Boom calls are long (8.86 s), low-frequency (

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