Zonotrichia leucophrys leucophrys (Forster).—Specimen examined: one, ♂ 30243, from 1 mi. SW San Pedro de las Colonias, 3700 ft., February 8, 1951.
The White-crowned Sparrow is a fairly common migrant or winter visitant in Coahuila. Miller, Friedman, Griscom, and Moore (1957:393) recorded Z. l. leucophrys from Sabinas on March 16 and February 23. Burleigh and Lowery (1942:212) remarked that "small flocks of White-crowned Sparrows were seen at infrequent intervals in thickets and stretches of underbrush on the outskirts of Saltillo on April 18 and again on April 24 ... [and] near a small town some twenty miles west of Saltillo on April 22." Specimens that Burleigh and Lowery (loc. cit.) collected "near Saltillo" were identified as Z. l. leucophrys.
Zonotrichia leucophrys gambelii (Nuttall).—Specimen examined: one, ♂ 31117, from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas), 4400 ft., March 15, 1952.
Miller (1955a:177) noted Z. l. gambelii on April 27 at 4600 feet in Boquillas wash in the Sierra del Carmen. Hellmayr (1938:568) listed Z. l. gambelii from Sabinas.
Zontrichia leucophrys oriantha Oberholser.—This subspecies has been recorded from Sabinas on April 25 and Hipólito on November 5 (Miller, Friedmann, Griscom, and Moore, 1957:393).
Melospiza lincolnii lincolnii (Audubon).—Specimen examined: one, ♀ 31595, from 20 mi. S Ocampo, 7000 ft., April 5, 1954, measurements: wing, 58 mm.; tail, 50 mm.; weight, 12 gms.
Lincoln's Sparrow seems to be a fairly common migrant or winter visitant in Coahuila; M. l. lincolnii is the common subspecies. Burleigh and Lowery (1942:212) found this sparrow only in a grain field situated between a small pond and a narrow stream on the outskirts of Saltillo; the four specimens collected were identified as M. l. lincolnii. No. 31595 was obtained in a pine-oak association.
Melospiza lincolnii alticola (Miller and McCabe).—Miller, Friedmann, Griscom, and Moore (1957:398) listed M. l. alticola, which seems to be uncommon in Coahuila, from Sabinas on March 14.
Melospiza lincolnii gracilis (Kittlitz).—Miller (1955a:177) took an unsexed representative of M. l. gracilis on April 7 in Carboneras Canyon of the Sierra del Carmen at 6700 feet. This occurrence is at the extreme eastern range of this subspecies.
Melospiza georgiana ericrypta Oberholser.—In Coahuila this subspecies of the Swamp Sparrow has been recorded as a migrant or winter visitant. Miller, Friedmann, Griscom, and Moore (1957:399) recorded it from Sabinas on February 22 to March 8 and from 8 mi. S Cuatro Ciénegas on November 4.