The Taiwan Breeding Bird Survey (BBS Taiwan) is a nationwide monitoring project with the aim of establishing a breeding bird population index for conservation. The project was initiated in 2009 as a citizen science project by a cross-organizational working group. The BBS Taiwan has obtained 358,183 records of bird sampling data from 454 sampling sites during the breeding season from 2009 to 2015. This paper provides the descriptions of sampling design, survey methods, and coverage of species of the dataset.