The Chinese Wild Bird Federation Bird Records Database (CWBF Database), the first and the largest web-based biodiversity citizen science database of Taiwan, has collected a large number of birdwatching checklists provided by more than 3,000 users. From 1972 to 2017, the CWBF Database accumulated 1,853,589 bird records within 102,716 checklists, covering nearly all areas and almost 90% of the 653 bird species of Taiwan Island and its outlying islands. The publication of the CWBF Database can be useful for estimating and predicting long-term bird population trends, which contributes to wild bird conservation and further promotes the opening and sharing of biodiversity data.