La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Laysan teal Anas laysanensis nesting phenology and site characteristics on Laysan Island
Auteurs :	Michelle H. Reynolds, Auteur ; Lisa H. Crampton, Auteur ; Mark S. Vekasy, Auteur
Type de document :	Article
Dans :	Wildfowl (57 2007)
Article en page(s) :	54-67
Langues:	Anglais
Résumé :	Factors influencing breeding initiation of the endangered Laysan Teal Anas laysanensis were studied on Lavsan Island in the Hawaiian Islands National Wildlife Refuge between 1998 and 2006. Sixty-two radio-tagged adult females were tracked for 30-180 days to locate and describe their nest sites. In addition, the Laysan Teal were surveyed daily during the breeding season, and 331 individually colour-ringed females were marked to identify new broods and timing of incubation initiation. Temperature, rainfall, and abundance of Brine Flies (Scatella sexnotata, an important prey) were measured in all years. Females nested on average 213 m (s.e.

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