In ecology and ethology, a technique called ‘bio-logging’ has been used to record the behaviour of wild animals by attaching a small logger, which includes a global positioning system (GPS) or acceleration sensor, to the animal of interest. This method's disadvantage is that the recovery of the logger is inefficient. In this study, we propose a data logger separator, which solves this problem by focussing on the logger recovery method. The device, which weighs ∼10 g, is intended for use on a shallow-diving seabird such as gulls. It comprises a separation mechanism based on a rotary key to achieve quiet separation and avoid causing stress to the seabird and the surrounding individuals. Moreover, the device is equipped with a wireless microcomputer that can be separated via a remote control from a distance of ∼100 m. For separation experiments on stuffed birds, the separation performance was confirmed to be sufficient. Because of experimentally testing the device in a real environment with low temperatures and wet conditions, it was considered that the separator's performance was sufficient to allow it to be used practically in the wild. GRAPHICAL ABSTRACT

中文翻译：

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超小型轻量化野生动物数据记录仪分离器的研究

在生态学和动物行为学中，一种称为“生物记录”的技术已被用于记录野生动物的行为，方法是将一个小型记录器（包括全球定位系统 (GPS) 或加速度传感器）连接到感兴趣的动物身上。这种方法的缺点是记录器的恢复效率低下。在这项研究中，我们提出了一种数据记录器分离器，它通过专注于记录器恢复方法来解决这个问题。该装置重约 10 克，旨在用于浅海潜水的海鸟，例如海鸥。它包括一个基于旋转键的分离机制，以实现安静的分离并避免对海鸟和周围的个体造成压力。此外，该设备配备了无线微型计算机，可以通过遥控器从约 100 m 的距离内分离。对于填充鸟的分离实验，证实分离性能是足够的。由于在低温和潮湿条件下的真实环境中对该装置进行了实验测试，认为该分离器的性能足以使其在野外实际使用。图形概要