Birds from Coahuila, Mexico

by Emil K. Urban

The University of Kansas specimens agree well with descriptions of C. m. potosinus as given by Moore (1939:195). No approach toward C. m. frontalis, centralis, or nigrescens is exhibited by any of these specimens. No. 31675, from Pico de Jimulco in southwestern Coahuila, is paler above and below than any other specimens of C. m. potosinus. Also the crown of No. 31675 is suffused with more red than in typical representatives of C. m. potosinus.

**Spinus pinus pinus (Wilson).—Specimen examined: one, sex ? 33219 (skeleton only) from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955.

On April 5, 7, and 21, Miller (1955a:175) recorded winter visitant or vagrant flocks of Pine Siskins in the Sierra del Carmen. Miller, Friedmann, Griscom, and Moore (1957:318) listed S. p. pinus south to Sierra Guadalupe. Dickerman saw Pine Siskins 13 mi. E San Antonio de las Alazanas on April 10, 1954.

Spinus pinus macropterus (Bonaparte).—Miller, Friedmann, Griscom, and Moore (1957:319) recorded a vagrant S. p. macropterus from 50 mi. S Monclova, 2850 feet, on November 9.

Spinus tristis pallidus Mearns.—Specimen examined: one, ♀ 31101, from Fortín (=33 mi. N, 8 mi. W San Gerónimo), 3300 ft., March 28, 1952, weight, 11.5 gms.

The American Goldfinch is an uncommon migrant or winter visitant in Coahuila. Hellmayr (1938:296) recorded S. t. pallidus from Sabinas. Fortín and Sabinas are the only places in Coahuila where S. t. pallidus has been collected. No. 31101 is a typical representative of S. t. pallidus.

**Spinus psaltria psaltria (Say).—Specimens examined: total 7: ♂ ♂ 32148-32149 and ♀ 32151 from 12 mi. N, 12 mi. W Jiménez, 850 ft., June 19, 1952; ♂ 32150 from 2 mi. W Jiménez, June 20, 1952; ♂ 33220 (skeleton only) from Parras, July 4, 1955; and ♂ 32939 and ♀ 32940 from Mesa de las Tablas, July 7, 1955, weights, 9.5, 11 gms.

In Coahuila, the Lesser Goldfinch seems to be common. Although Miller (1955a:175) did not find it in the Sierra del Carmen, he reported that Marsh took a specimen on August 22 in Chuperosa Canyon that was "presumed to" be S. p. psaltria. Burleigh and Lowery (1942:206) observed the Lesser Goldfinch "on the outskirts of Saltillo in an orchard on April 20."

Nos. 32148-32151 and 32940 were typical for the subspecies psaltria. A partial albino (32939), which was obtained from a pine-oak-wheat field edge, has upper parts that lack the black coloring of typical representatives of S. p. psaltria. Instead the crown and back of No. 32939 is yellow, resembling the color of its underparts, the wing coverts are white, and its primaries are black with white edgings.

*Atlapetes pileatus dilutus Ridgway.—Specimens examined: total 2: ♂ 32942 and ♀ 32943 from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955.