The Ancient Murrelet (Synthliboramphus antiquus) occurs casually in interior western North America, with records as far inland as the Upper Midwest and Great Lakes region (A.O.U. 1983). There are no previous records of this species from New Mexico (Hubbard 1978; New Mexico Ornithological Society 1962–1985); however, the eventual occurrence of S. antiquus in New Mexico might have been expected, given the proximity of specimen and sight records in Colorado (Bailey and Niedrach 1967), Utah (Behle and Perry 1975), and Nevada (Monson and Phillips 1981).