Since Sullivan and Kershner (2005) last summarized the birds of San Clemente Island, California, 13 additional species have been recorded on the island, bringing the total number of species documented there to 330. Most notable was the first Bluethroat (Luscinia svecica) recorded in North America outside of its limited known range in Alaska. Additionally, we document a first record of the Black-chinned Sparrow (Spizella atrogularis) breeding on the California Channel Islands.