I am indebted to Rich Stallcup for pointing out a record of the Thick-billed Kingbird (Tyrannus crassirostris) in Baja California prior to those reported by C. T. Collins and J. L. Atwood (First Records of the Thick-billed Kingbird in Baja California, Mexico, W. Birds 21:75–76, 1990). The bird was seen 10 km north of El Triunfo, Baja California Sur, on 27 January 1984 by Stallcup and others [Notes and News, MBA “Bulletin Board,” Newsletter of the Mexican Birding Association 1 (87-3): 7, 1987] and may have been the same bird seen at or near this locality by Collins and Atwood on 13 December 1986, as wintering Thick-billed Kingbirds and other flycatchers are well known to return to same site year after year. The need for this correction, however, serves to illustrate a growing problem.