In the northern interior state of Coahuila, Mexico, over 400 avian species have been recorded, 46% of which are migrant (Garza de León 2003). Because of its geographic position and topography the area serves as a migration corridor for species from eastern, central, and western North America. These geographic conditions enhance the region’s importance as an area for wintering and transient birds (Garza de León 1987, Garza de León et al. unpubl. data), despite its aridity. Here we report an occurrence of Sabine’s Gull (Xema sabini) in the state of Coahuila.