_Sayornis phoebe_ (Latham).--Miller, Friedmann, Griscom, and Moore
(1957:66) recorded the Eastern Phoebe from Coahuila on November 4-14.
*_Sayornis nigricans semiatra_ (Vigors).--_Specimens examined:_ total
2: [Female] 31046 from 1 mi. N Boquillas, 700 ft., March 7, 1952; and
[Female] 31047 from Fortin (=33 mi. N, 8 mi. W San Geronimo), 3300 ft.,
March 27, 1952.
Of the Black Phoebe, the two subspecies _semiatra_ and _nigricans_
intergrade in Coahuila. Typical representatives of _S. n. semiatra_ are
present in northern Coahuila. The under tail coverts of Nos.
31046-31047 are immaculate and white. Miller (1955:167) noted the two
specimens collected from the Sierra del Carmen to have narrow dark
shaft streaks on the under tail coverts. He (_loc. cit._) remarked also
that "the marking of the under tail coverts may indicate a beginning of
a gradient in increased darkening of these feathers toward _S. n.
nigricans_ in southern Coahuila."
*_Sayornis nigricans nigricans_ (Swainson).--Burleigh and Lowery
(1942:193) collected several specimens of _S. n. nigricans_ "on the
outskirts of Saltillo" and saw a pair at the Chorro del Agua on April
19.
*_Sayornis saya saya_ (Bonaparte).--_Specimens examined:_ total 4:
[Female] 31049 from the Rio Grande (=17 mi. S Dryden, Terrell Co.,
Texas, in Coahuila), 600 ft., March 18, 1952; sex ? 31048 from 10 mi. S,
5 mi. E Boquillas, 1500 ft., March 4, 1952; [Male] 31050 from Fortin
(=33 mi. N, 8 mi. W San Geronimo), 3300 ft., March 29, 1952; and
[Female] 32059 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25,
1952.
Say's Phoebe occurs commonly in Coahuila. Miller (1955a:167) obtained a
female with an active brood patch in Boquillas Canyon of the Sierra del
Carmen, and remarked that Marsh took a juvenile on September 2 at El
Rincon. Sutton and Burleigh (1939a:33) saw this phoebe several times in
southern Coahuila and obtained a male "near San Pedro" on January 29.
Burleigh and Lowery (1942:193) recorded this species as "a common
breeding bird both on Diamante Pass and on the arid plateau around
Saltillo." No. 32059 was a juvenile.
_Empidonax traillii brewsteri_ Oberholser.--Amadon and Phillips
(1947:578) look a Traill Flycatcher of the subspecies _brewsteri_ at
Las Delicias on August 11.
_Empidonax minimus_ (Baird and Baird).--_Specimen examined:_ one,
[Male] 31470, from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), 6200
ft., May 13, 1954.
Amadon and Phillips (1947:578) obtained two Least Flycatchers at Las
Delicias on August 12. Dickerman took No. 31470 in pine-oak vegetation.
_Empidonax hammondii_ (Xantus).--_Specimen examined:_ one, sex ? 31657,
from the north slope of Sierra Guadalupe (=11 mi. S, 7 mi. W General
Cepeda), 7800 ft., April 20, 1953.
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