Olmstead saw a female Marsh Hawk 1 mi. W
San Buenaventura on April 2, 1952. Burleigh and Lowery (1942:188) noted
the Marsh Hawk "about Saltillo" and "above the summit of Diamante Pass
at about 8,000 feet" on April 14. Sutton and Burleigh (1939a:26) noted
wintering Marsh Hawks "near San Pedro."

_Pandion haliaetus_ (Linnaeus).--Miller (1955a:161) reported seeing an
Osprey on April 9 in Corte Madera Canyon, "apparently in migration;"
this is the only record from Coahuila.

**_Caracara cheriway_ (Jacquin).--From the few records in the
literature, I judge that the Caracara is uncommon in Coahuila. Evenden
(1952:113) saw three Caracaras "south of Saltillo" on March 5. Baker
saw a Caracara in the Sierra del Pino (=6 mi. NW Tanque Alvarez), 3400
feet, on July 6, 1953. No specimens of the Caracara have been taken
from Coahuila.

_Falco mexicanus_ Schlegel.--_Specimen examined:_ one, [Male] 31596,
from Saltillo, January 10, 1954.

The Prairie Falcon is an uncommon winter visitant in Coahuila.
Friedmann, Griscom, and Moore (1950:65) indicated that _Falco
mexicanus_ winters south to Sonora, Oaxaca, Chihuahua, Durango,
Zacatecas, Auguascalientes, Hidalgo, Nuevo Leon, and Tamaulipas.

No. 31596 is the first recorded specimen of the Prairie Falcon from
Coahuila. The bird was heavily parasitized by worms in the mesenteries
and seems to be an adult. Although its nuchal collar, as in immatures,
is washed with pale cinnamon-buff, its thighs are not heavily marked
with dark brown spots. The superciliary lines have blackish rather than
brownish streaks, and the scapulars do not have four or five dark bars
(Friedmann, 1950:624).

_Falco columbarius bendirei_ Swann.--_Specimen examined:_ one, [Male]
31634, from Don Martin Dam (=Rio Salado), November 27, 1953,
measurements: wing, 191 mm.; tail, 111 mm.; tarsus, 37 mm.; culmen, 12
mm.; testes, 3x1 mm.

The Pigeon Hawk seems to be uncommon in Coahuila. No. 31634, the first
record of this species in Coahuila, has pale gray interspaces on the
rectrices of its tail that are definitely wider than the three black
bands, indicating affinity with _bendirei_ (Friedmann, 1950:702). Our
bird was obtained near the base of the Don Martin Dam of the Rio
Salado, and was observed hunting dragonflies over the water.

_Falco sparverius sparverius_ Linnaeus.--_Specimen examined:_ one,
[Male] 31648, from the north foot of Sierra Guadalupe (=10 mi. S, 5 mi.
W General Cepeda), 6400 ft., April 17, 1953, w