The Indigo Bunting is rare in Coahuila. Van Hoose (1955:303) reported
that No. 31544 seems to provide the first record of the species in the
State. The Indigo Bunting is a summer resident in southwestern Oklahoma
and southeastern Texas (Miller, Friedmann, Griscom, and Moore,
1957:336). No. 31544 seemingly represents a large extension in the
summer range of the Indigo Bunting. Van Hoose (_loc. cit._) stated that
No. 31544 was observed chasing another male, and the pursuer in turn
was followed by a female; he thought that the territorial behavior of
this bird suggested breeding.
*_Passerina versicolor versicolor_ (Bonaparte).--_Specimens examined:_
total 2: [Male] 35414 from 6 mi. N, 2 mi. W Castillon, 3750 ft., June
30, 1953, weight, 8 gms.; and [Male] 35415 from 5 mi. S Castillon, 4150
ft., June 28, 1953.
Although the Varied Bunting has been recorded only from northwestern
Coahuila, I suspect that this bird is locally common throughout most of
the State. Miller (1955a:174) stated that the habitat of this species
consisted of catclaw-covered bottom lands at the base of the Sierra del
Carmen at 4700 feet. Miller's records indicate incipient breeding by
_P. v. versicolor_ in the Sierra del Carmen on April 26. The size of
the testes (11 mm.) of No. 35415 and the dates (June 28, 30) on which
Nos. 35414-35415 were collected are strong evidence of breeding by the
Varied Bunting 6 mi. N and 2 mi. W Castillon and 5 mi. S Castillon.
*_Passerina ciris pallidior_ Mearns.--_Specimens examined:_ total 6:
[Male] 32141 and [Female] 32142 from 2 mi. S, 11 mi. E Nava, 810 ft.,
June 15 and 16, 1952; [Male] 35416 from 6 mi. N, 2 mi. W Castillon,
3750 ft., June 29, 1953, weight, 15 gms.; [Male] 32140 from 2 mi. S, 3
mi. E San Juan de Sabinas, June 22, 1952; [Male] 31547 from 16 mi. N,
14 mi. E Ocampo, May 10, 1954, weight, 16 gms.; and [Male] 31546 from
San Marcos, May 5, 1954.
The Painted Bunting is a common summer resident in Coahuila. Marsh and
Stevenson (1938:287) wrote that Painted Buntings were common in summer
in the foothills of the Sierra del Carmen, and they took a male at
Piedra Blanca on July 25 and a female at Jardin del Sur on September 1.
Amadon and Phillips (1947:580) remarked that two immature Painted
Buntings, "apparently migrants, were taken at Las Delicias on August 10
and 11." Miller, Friedmann, Griscom, and Moore (1957:339) recorded
breeding by _P. c. pallidior_ at Hipolito, 4200 feet, on July 1.
Findley saw Painted Buntings 2 mi. S and 11 mi. E Nava on June 15,
1952. Dickerman saw Painted Buntings 4 mi. N San Isidro on May 10,
1954. Hardy saw Painted Buntings at Parras on July 4, 1955.
Public-domain text, read in full here on John Shaqi.
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