This list of birds of Delaware includes species credibly documented in the U.S. state of Delaware and accepted by the Delaware Bird Records Committee (DBRC). As of August 2021 there were 427 species on the official list. Of them, 100 are classed as accidental and six were introduced to North America. One species whose record is under review by the DBRC is not included. The following tags have been used to annotate some species: