ABSTRACT Vocal individuality has been used as a monitoring tool, and two criteria are a prerequisite: high variation among individuals and low variation within individuals, and vocal consistency within and across seasons. We examined individual variation in the territorial hoot calls of the tawny owl (Strix aluco) to discriminate between males and to assess a possible conservation technique that would allow for monitoring individuals within a study area. The territorial calls were recorded from five males in the Naejang Mountain National Park in South Korea during the breeding season in 2015 and 2016 and analyzed both quantitatively and qualitatively to determine the amount of variation within and between individuals. Our results showed that the territorial calls were specific to individuals within a population and that the acoustic distances between males living in the same territory during the two years were the smallest for the four nesting sites. Our results suggest that territorial calls of the tawny owls are individually identifiable over two years and that this acoustic technique can be useful for monitoring individual site fidelity.

中文翻译：

---

韩国雄性黄褐色猫头鹰 (Strix aluco) 发声的案例研究：呼叫特征、个性以及人口普查的潜在用途

摘要 声乐个性已被用作监测工具，有两个标准是先决条件：个体之间的高变异和个体内部的低变异，以及季节内和跨季节的声音一致性。我们检查了黄鸮 (Strix aluco) 的领地叫声的个体变异，以区分雄性并评估一种可能的保护技术，该技术将允许监测研究区域内的个体。在 2015 年和 2016 年的繁殖季节，韩国内藏山国家公园的五只雄性鸟类的领土叫声被记录下来，并进行了定量和定性分析，以确定个体内部和个体之间的变异量。我们的结果表明，领土呼叫特定于种群中的个体，并且两年内生活在同一领土的雄性之间的声学​​距离对于四个筑巢地点是最小的。我们的结果表明，黄褐色猫头鹰的领地叫声在两年内可以单独识别，并且这种声学技术可用于监测单个站点的保真度。