La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Migration and diving activity in three non-breeding flesh-footed shearwaters Puffinus carneipes
Auteurs :	Matt J. Rayner, Auteur ; Graeme A. Taylor, Auteur ; David R. Thompson, Auteur ; Leigh G. Torres, Auteur ; Paul M. Sagar, Auteur ; Scott A. Shaffer, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (42(3) MAY 2011)
Article en page(s) :	266-270
Langues:	Anglais
Résumé :	The flesh-footed shearwater Puffinus carneipes is a medium-sized shearwater and transequatorial migrant within the Pacific Ocean. We used archival data loggers to study the non-breeding migration and diving behaviour of three flesh-footed shearwaters following breeding in New Zealand. In early April, the birds migrated to the western North Pacific Ocean in 23 +/- 2 days, occupying core distributions within the Kuroshio/Oyashio transition system for 91 +/- 17 days. Subsequent movements were made into the Sea of Okhotsk prior to return migrations to New Zealand in mid September (19 +/- 1 days). Diving depths during migration (2.5 +/- 2.4 m), and in the western North Pacific (2.4 +/- 2.6 m) were shallower than during the onset of breeding (4.8 +/- 8.7 m). Non-breeding flesh-footed shearwaters occupy a region of high fisheries activity and the impact of these fisheries on adult survival in this declining species warrant further study.

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