Albatrosses are amongst the most globally-threatened species and fisheries bycatch is one of the major conservation issues worldwide. Among the albatrosses the Amsterdam albatross is listed as one of the most endangered species. Within the current National Plan of Actions framework, the present study outlines the first results of a multi-year survey evaluating juvenile dispersal and immature at sea distribution using geolocation and conservation implications. Here we report the first evidence of an Amsterdam albatross wandering for extensive periods outside the Indian Ocean, in the Pacific Ocean. This unprecedented and novel finding is discussed in terms of overlaps with fisheries and conservations issues. This study brings new insights on movements of vagrant stages of an endangered species, paving the way for refined assessments updates of species vulnerability to ongoing anthropogenic threats while providing basic conservation guidance. This makes it possible to point out the responsibility of the various management bodies both for the high seas regional fisheries management organisations and for exclusive economic zones.

信天翁是全球受威胁最严重的物种之一，渔业兼捕是世界范围内的主要保护问题之一。在信天翁中，阿姆斯特丹信天翁被列为最濒危的物种之一。在当前的国家行动计划框架内，本研究概述了一项多年调查的初步结果，该调查利用地理定位和保护影响评估了海上分布的幼鱼扩散和未成熟幼鱼。在这里，我们报告了阿姆斯特丹信天翁在印度洋以外太平洋地区长时间游荡的第一个证据。从与渔业和保护问题的重叠角度讨论了这一前所未有的新颖发现。这项研究为濒危物种流浪阶段的运动带来了新的见解，在提供基本保护指导的同时，为对物种易受持续人为威胁的脆弱性的精确评估更新铺平道路。这使得可以指出各个管理机构对公海区域渔业管理组织和专属经济区的责任。