_Buteo platypterus platypterus_ (Vieillot).--_Specimen examined:_ one, [Male] 32628, from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955. The Broad-winged Hawk is rare in Coahuila. No. 32628, if a migrant, was retarded from moving northward by the loss of its right foot and distal one-third of its tarsus. Packard (1957:371) reported this specimen as the first record of the species in Coahuila. *_Buteo swainsoni Bonaparte._--_Specimens examined:_ total 2: [Male] 32022 from 2 mi. W Jimenez, 850 ft., June 20, 1952; and [Male] 29555 from Iglesias (=15 mi. SW Sabinas), 1000 ft., August 22, 1949. Swainson's Hawk is not common in Coahuila. The size of the testes (6x4 mm.) of No. 32022, the adult plumage, and the date (June 20) on which it was obtained suggest that it was a breeding bird. Friedmann, Griscom, and Moore (1950:55) reported that this species breeds as far east as Durango and Chihuahua. Findley saw a Swainson's Hawk 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952. **_Buteo albonotatus Kaup._--The Zone-tailed Hawk is uncommon in Coahuila. Sutton and Burleigh (1939a:26) noted the species "a few miles west of Saltillo ... on January 30." _Buteo regalis_ (Gray).--The Ferruginous Hawk is uncommon in Coahuila. Sutton and Burleigh (1939a:26) noted a single bird "not far from Parras, on January 30." _Buteo nitidus_ (Latham).--Evenden (1952:112) saw a Gray Hawk one mile northeast of Saltillo, at Ramos Arizpe on March 4. Although there are no other records of the Gray Hawk from Coahuila, its occurrence in the State would be expected because this species has been recorded from Nuevo Leon and Tamaulipas in northeastern Mexico (Friedmann, Griscom, and Moore, 1950:57). **_Parabuteo unicinctus harrisi_ (Audubon).--Harris' Hawk is fairly common in southern Coahuila. Sutton and Burleigh (1939a:26) stated that Harris' Hawk "was one of the few birds noted repeatedly in ... southern Coahuila...." _Circus cyaneus_ (Linnaeus).--The Marsh Hawk is a common migrant and winter visitant in Coahuila. Miller (1955a:161) remarked that the Marsh Hawk was "seen in northward migratory flight across the desert east of the Sierra del Carmen on March 31 and on April 11 along the west face of Loomis Peak at 8800 feet." 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.