The White-rumped Shama (Copsychus malabaricus), a popular pet songbird, has invaded the main island of Taiwan for over 20 years. We found that the species could mimic the sounds of at least 28 animal species, encompassing 26 avian, one mammal, and one cricket species. This study explicitly explores the temporal pattern of mimicry in songs of the White-rumped Shama, examining 242 males and 3443 songs. Notably, the White-rumped Shama, as the mimicker, predominantly used the mimicries of the Taiwan Scimitar-babbler (Pomatorhinus ruficollis musicus), with 86% of birds using them in the introductory phrase, 68% in the middle, and 58% in the ending. Following closely was the Light-vented Bulbul (Pycnonotus sinensis formosae), primarily mimicked in the middle and ending phrases. Subsequently, the Black-naped Monarch (Hypothymis azurea oberholseri), the Rufous-capped Babbler (Stachyris ruficeps praecognitum), and the Gray-cheeked Fulvett (Alcippe morrisonia morrisonia) were most likely mimicked species, with mimicries concentrated primarily in the introductory and middle phrases. The Taiwan Bamboo Partridge (Bambusicola thoracicus sonorivox) was the last among the top six mimicked species, primarily occurring in the ending phrase. Mimicries were mainly observed in the middle phrase for species mimicked by less than 5% of birds. In conclusion, our findings suggest that the White-rumped Shama most likely mimicked two avian species with similar song frequency ranges, contributing to the increased song complexity by mimicking sounds from the other 26 diverse animal species.