The purpose of this study was to investigate the migration characteristics of passage migrants, the Rufous-tailed Robin, into Korea over a 5-year period (2019-2023) using bioacoustic monitoring methods. The target species for this study was the Rufous-tailed robin (Larvivora sibilans), and the target locations were 35 sites, including as 24 national parks, 1 provincial park, 6 Ramsar wetlands, and 4 other sites. Data were collected from January 2019 to December 2023, and analyzed every year from April to May. The key findings of this study were as follows. First, songs of L. sibilans were most frequently detected at 6 a.m. in all 5 years, with no vocal activity observed from 8 p.m. to nighttime and early morning. Songs were detected from May 1 to May 19, and their frequencies were highest on May 8 and 9, 2019; May 5 and 13, 2020; May 11, 2021; May 9 and 10, 2022; and May 4, 2023. Second, the songs of L. sibilans were detected at 14 sites, including Woljeongsa Fir Forest in Odaesan National Park, Jingwan-dong Wetland in Bukhansan National Park, Jusanji in Juwangsan National Park, Upo Wetland in Changnyeong, and Dongbaek Dongsan in Jeju. The areas where songs were commonly detected throughout the 5 years were Yongdong Reservoir in Gyeryongsan National Park, Duung Wetland in Taean, Ungok Wetland in Gochang, and Namsan in Seoul. Third, as a result of examining the characteristics of the period in which the songs of L. sibilans were detected by year and site, it was found that songs were detected from May 5 to 19, 2019; May 3 to 17, 2020; May 1 to 13, 2021; May 3 to 15, 2022; and May 3 to 17, 2023. The site with the most days in which songs were detected across all 5 years was Namsan in Seoul. Fourth, there were differences in the annual average number of days in which the songs of L. sibilans were detected (p < 0.001), and the results of post-hoc tests showed that these differences occurred in 2020 and 2021. This study is significant in that it precisely identified the arrival characteristics of the small passage migrant, the Rufous-tailed Robin, using bioacoustic monitoring methods and provided basic data for future climate change-related issues and protected area management.