The Mountain Bluebird is a winter visitant to Coahuila. Miller, Friedmann, Griscom, and Moore (1957:200) recorded _Sialia currucoides_ from Hipolito on February 24. **_Myadestes townsendi townsendi_ (Audubon).--_Specimen examined:_ one, [Female] 31079, from 26 mi. W Santa Teresa, 7050 ft., April 4, 1952. Miller (1955a:171) detected Townsend's Solitaire in clumps of large pines in two different locations at 7000 and 7500 feet on April 4, 6, and 8 in the Sierra del Carmen. He did not find a breeding population of _M. t. townsendi_, but did note favorable habitat for breeding. Ridgway (1907:164) recorded _M. townsendi_ from the Sierra Guadalupe on April 21. Dickerman saw a Townsend's Solitaire in the Sierra de la Madera on December 13, 1953. The underparts of No. 31079 are not uniformly dark, being paler on the chin, throat, and abdomen than elsewhere as is true of typical representatives of _M. t. townsendi_. **_Polioptila caerulea caerulea_ (Linnaeus).--_Specimen examined:_ one, [Male] 32097, from 2 mi. S, 11 mi. E Nava, June 15, 1952. No. 32097 is the first record of occurrence of this subspecies of Blue-gray Gnatcatcher in the State. The white of the underparts of No. 32097 is less grayish than the underparts of typical representatives of _P. c. amoenissima_, and the black at the base of the inner webs of the outermost rectrix does not extend beyond the tip of the under tail coverts. Representatives of _P. c. amoenissima_ have black at the base of the inner web of the outermost rectrix more extended, usually showing beyond the tip of the under tail coverts. The size of the testes (3x2 mm.) of No. 32097 does not suggest breeding, but the date (June 15) indicates that it was a resident. *_Polioptila caerulea amoenissima_ Grinnell.--_Specimen examined:_ one, [Male] 31080, from 7 mi. S, 2 mi. E Boquillas, 800 ft., February 29, 1952, weight, 5.4 gms. This subspecies of the Blue-gray Gnatcatcher breeds in Coahuila and occurs throughout all of the State except the northeastern section. Miller (1955a:171) remarked that "this gnatcatcher was apparently established on summer territories in the oaks and walnuts of the wash of Boquillas Canyon at the foot of the mountains" of the Sierra del Carmen. Burleigh and Lowery (1942:200) noted "this species only in the open woods at the summit of Diamante Pass, where, however, it was not uncommon." Miller, Friedmann, Griscom, and Moore (1957:201) recorded _P. c. amoenissima_ breeding at El Diamante on July 8. *_Polioptila melanura melanura_ Lawrence.--_Specimen examined:_ one, [Male] 31081, from 7 mi. S, 2 mi. E Boquillas, 800 ft., March 1, 1952, weight, 5.6 gms.