Burleigh and Lowery (1942:196) noted the Cliff Swallow "in small numbers about Saltillo and the nearby villages" where the species "showed evidence of beginning to nest in many of the houses...." They (_loc. cit._) found Cliff Swallows also at the Chorro del Agua and Diamante Valley. According to Dickerman, Nos. 31585-31586 were from a colony, members of which were collecting mud at a stock tank. *_Petrochelidon fulva pallida_ Nelson.--The Cave Swallow seems to be uncommon in eastern Coahuila. Selander and Baker (1957:345) list Saltillo, Sabinas, and Monclova as the three known localities for this swallow in the State. *_Progne subis subis_ (Linnaeus).--Miller, Friedmann, Griscom, and Moore (1957:107) reported, presumably on the basis of a published record not found by me, that the Purple Martin breeds in Coahuila. **_Progne chalybea chalybea_ (Gmelin).--The only record of the Gray-breasted Martin in Coahuila was given by Ridgway (1904:42) when he listed _P. c. chalybea_ from Sabinas. **_Cyanocitta stelleri macrolopha_ Baird.--_Specimens examined:_ total 2: [Male] 32788 and [Female] 32787 from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955. From the paucity of records in the literature, I judge that Steller's Jay is uncommon in Coahuila. Nos. 32787-32788 seemingly represent the first records of this species in the State, and are referred to the subspecies _macrolopha_ on the basis of relatively long (150, 151 mm.) wing, near the maximum for _stelleri_ from Mexico. The date (July 6) of collection suggests that these birds were resident in southeastern Coahuila. **_Aphelocoma coerulescens cyanotis_ Ridgway.--The Scrub Jay is common in southeastern Coahuila. Burleigh and Lowery (1942:196) noted this species in small numbers at the summit of Diamante Pass, daily on the lower slopes of the mountains, and a few birds "on the outskirts of Saltillo, where they were probably nesting...." Sutton and Burleigh (1939a:35) also noted several flocks at Diamante Pass. Miller, Friedmann, Griscom, and Moore (1957:123) reported _A. c. cyanotis_ from El Diamante. Ridgway (1904:335) listed this subspecies of the Scrub Jay (then called _Aphelocoma cyanotis_) from Carneros, Sierra Encarnacion, and Sierra Guadalupe.