Light attraction impacts nocturnally active fledgling seabirds worldwide and is a particularly acute problem on Kaua‘i (the northern-most island in the main Hawaiian Island archipelago) for the Critically Endangered Newell’s shearwater Puffinus newelli. The Save Our Shearwaters (SOS) program was created in 1979 to address this issue and to date has recovered and released to sea more than 30 500 fledglings. Although the value of the program for animal welfare is clear, as birds cannot simply be left to die, no evaluation exists to inform post-release survival. We used satellite transmitters to track 38 fledglings released by SOS and compared their survival rates (assessed by tag transmission duration) to those of 12 chicks that fledged naturally from the mountains of Kaua‘i. Wild fledglings transmitted longer than SOS birds, and SOS birds with longer rehabilitation periods transmitted for a shorter duration than birds released immediately or rehabilitated for only 1 d. Although transmitter durations from grounded fledglings were shorter (indicating impacts to survivorship), some SOS birds did survive and dispersed out to sea. All surviving birds (wild and SOS) traveled more than 2000 km to the southwest of Kaua‘i, where they concentrated mostly in the North Pacific Equatorial Countercurrent Province, revealing a large-scale annual post-breeding aggregation zone for fledgling Newell’s shearwaters. While there was reduced survival among birds undergoing rehabilitation, SOS remains an important contribution toward the conservation of Newell’s shearwater because a proportion of released birds do indeed survive. However, light attraction, the root cause of fallout, remains a serious unresolved issue on Kaua’i.

中文翻译：

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来自夏威夷考艾岛的救援和康复计划的辐射纽厄尔海鸥雏鸟的释放后生存

光吸引会影响全球夜间活动的雏海鸟，并且是考艾岛（夏威夷主要群岛中最北端的岛屿）对于极度濒危的纽厄尔海雀海雀的一个特别严重的问题。Save Our Shearwaters (SOS) 计划于 1979 年创建以解决这个问题，迄今为止已经恢复并释放了 30 500 多只雏鸟。尽管该计划对动物福利的价值是显而易见的，因为不能简单地让鸟类等死，但不存在评估释放后的生存情况。我们使用卫星发射器跟踪 SOS 释放的 38 只雏鸟，并将它们的存活率（通过标签传输持续时间评估）与 12 只从考艾岛山上自然发育的小鸡的存活率进行比较。野生雏鸟比 SOS 鸟类传播时间更长，与立即释放或仅恢复 1 天的鸟类相比，具有较长康复期的 SOS 鸟类传播的持续时间更短。尽管来自地面雏鸟的发射器持续时间较短（表明对生存的影响），但一些 SOS 鸟类确实存活下来并分散到海中。所有幸存的鸟类（野生鸟类和 SOS 鸟类）都向考艾岛西南部旅行了 2000 多公里，在那里它们主要集中在北太平洋赤道逆流省，揭示了一个大规模的年度繁殖后聚集区，供雏鸟的纽厄尔剪切水使用。虽然接受康复治疗的鸟类的存活率有所下降，但 SOS 仍然是对保护纽厄尔海鸥的重要贡献，因为一部分被释放的鸟类确实存活下来。然而，光的吸引力，辐射的根本原因，