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Range DescriptionCypseloides storeri has a restricted range in south-west Mexico, where it is known only from a few sight records and six specimens taken in Guerrero (Sierra de Atoyac), Michoacán (Tacámbaro) and Jalisco (Sierra de Manantlán and Juanacatlán) (Navarro et al. 1992, Navarro et al. 1993, Ibánez-Hernández et al. 2003). The most recent published observations are of a single individual believed to be this species in a mixed flock of c.100 swifts near Tacámbaro in September 1995 (Howell et al. 1997), a record of several birds showing features of C. storeri within a flock of C. rutilus near Manzanillo, Colima in February 2002 (Tobias et al. 2006, D. Lane in litt. 2006) and another possible single at Teotitlan del Valle, Oaxaca in March 2010 (Howell 2011). Unpublished records include "one about 5km south of Tacámbaro in July 2009" (M. Patten per J. King in litt. 2010, 2011), "at least 2-3 at an apparent colony at Tacámbaro on 17-18 June 2010" (J. King in litt. 2010, 2011) and several photographed at Rancho Primavera, El Tuito, Jalisco in 24 January 2012 (B. Gibbons per J. King in litt. 2012).