*_Xanthocephalus xanthocephalus_ (Bonaparte).--_Specimen examined:_
one, [Male] 32494 (skeleton only) from Las Margaritas, August 4, 1955.

The Yellow-headed Blackbird occurs in Coahuila in migration. Miller
(1955a:173) found this blackbird at Noria "in the flats immediately
east of the Sierra del Carmen" on April 28, and reported also that
Marsh took a male in worn breeding plumage on July 24 at Tanque de los
Melones on La Bavia Ranch east of Fresno Mesa. Amadon and Phillips
(1947:579) took two adult males at Las Delicias on August 11 and 15.
Dickerman also saw a female 8 mi. E and 2 mi. S Americanos on May 18,
1954. Van Hoose saw a male at Torreon on July 2, 1955.

*_Agelaius phoeniceus megapotamus_ Oberholser.--_Specimens examined:_
total 5: [Male] 32124, [Female] 32126, and [Female] 32128 from 12 mi.
N, 12 mi. W Jimenez, 850 ft., June 19, 1952; [Male] 32125 from 2 mi. W
Jimenez, 850 ft., June 20, 1952; and [Female] 32127 from 9 mi. S, 11
mi. E Sabinas, June 14, 1952.

This subspecies of the Redwinged Blackbird is common in eastern
Coahuila. There are no records of the species from western Coahuila.
Burleigh and Lowery (1942:205) obtained a male at "the edge of
Saltillo" on April 24. Oberholser (1919a:23) recorded _A. p.
megapotamus_ from Porfirio Diaz on June 2, 5, and 6. The presence of
juveniles (32126, 32128) from 12 mi. N and 12 mi. W Jimenez and (32125)
from 2 mi. W Jimenez, respectively, and the dates (June 14, 19, 20) on
which the University of Kansas specimens were obtained are evidence of
breeding by _A. p. megapotamus_ in northeastern Coahuila.

*_Icterus spurius_ (Linnaeus).--_Specimens examined:_ total 8: [Male]
[Male] 31536-31537 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19,
1952; [Male] 31538 from 2 mi. S, 3 mi. E San Juan de Sabinas, 1160 ft.,
June 23, 1952; [Male] [Male] 32605-32607 from Parras, July 4, 1955;
[Male] 32604 and [Female] 32603 from Hacienda San Lorenzo, July 3,
1955, weights, 19.4, 18.5 gms.

The Orchard Oriole seems to occur fairly commonly in eastern and
southern Coahuila and breeds in the State. Amadon and Phillips
(1947:579) reported that Orchard Orioles were common in the desert
"about Las Delicias" in August and September and probably were
migrants. Dickerman collected Nos. 32605-32606 along an irrigated
field-edge that consisted of cottonwood and oak; he obtained Nos.
32603-32604 in an irrigated pecan orchard. The sizes of the testes
(10x5 mm.; 10x5 mm.; 8x7 mm.; 8x7 mm