VO 'i909 XVI ] Felger, Colorado Water Birds. 283 



adjoining localities. (About Oct. 2-?.) Cooke records only two for 

 Colorado, one in Mrs. Maxwell's collection, taken presumably near Boulder, 

 and one found dead near Fort Collins by G. F. Breninger. (Birds of Colo., 

 p. 57.) Mr. Adam Balmer informed me that one was taken at Aurora 

 Lake, Aurora, a suburb of Denver, about October 2, 1901.] 



165. Oidemia deglandi. White -winged Scoter. — Migrant; rare. 

 (Oct. 11-Nov. 3.) Cooke records four specimens for Colorado; three 

 reported by G. F. Breninger, one of which was taken Nov. 3, 1890; and one 

 reported by Mr. Fenton as having been taken at Barr Lake, Nov. 2, 1898. 

 (Birds of Colo., pp. 57, 195.) H. G. Smith records five specimens, as 

 follows: one at Marston's Lake, near Littleton, October, 1887; One at 

 Lee's Lake, near Fort Collins, Oct. 23, 1888; one in the collection of W. G. 

 Smith, Loveland; one at Sloan's Lake, near Denver; and one taken at 

 La Salle, Oct. 24, 1904. (Nid., Ill, 1896, p. 48, and Auk, XXV, 1908, 

 p. 184.) Dr. W. H. Bergtold records one taken at Loveland, Oct. 11, 1903. 

 (Auk, XXI, 1904, p. 78.) I have in my collection another of this species 

 that was killed by Bryan Haywood at Calkin's Lake, near Longmont, and 

 in Weld County, Oct. 20, 1901. 



166. Oidemia perspicillata. Surf Scoter. — Migrant; rare. (Oetober- 

 ?.) Cooke records five specimens for Colorado; one in the collection of 

 W. G. Smith, taken at Loveland; one reported by H. G. Smith, taken 

 at Marston's Lake, near Denver, in October, 1887; two killed by H. A. 

 Flynn at Loveland, Oct. 31, 1899; and one killed at Barr Lake by L. B. 

 Meek, Oct. 22, 1889. (Birds of Colo., pp. 57, 196.) 



167. Erismatura jamaicensis. Ruddy Duck. — Summer resident. 

 (March 24-?.) In summer, common; in migration, more common. A com- 

 mon and regular breeder along the Barr Lake Chain. 



169. Chen hyperborea. Lesser Snow Goose. — Winter resident. (Oct. 

 20-March 14.) Not common in migration or winter. A mounted specimen 

 in the Colorado Museum of Natural History, at City Park, Denver, was 

 shot by J. T. Mason at Barr. Miss Jennie Patten reports to Judge Hender- 

 son that on Mar. 14, 1905, she saw a flock of thirty at Yuma. 



169a. Chen hyperborea nivalis. Greater Snow Goose. — Migrant; 

 rare. (?-April 9.) Cooke records but two specimens for Colorado; one 

 taken within this area east of Greeley by Pres. Z. X. Snyder, on Mar. 

 20, 1895; the other taken by John F. Campion at Boyd's Lake near Love- 

 land, on April 9, 1899. 



170. Chen rossi. Ross's Snow Goose. — Winter resident; very rare. 

 (Dec. 23, only date.) The only record for Colorado was a specimen re- 

 ported by the writer as having been shot by Capt. Eli, U. S. A., and pre- 

 sented by him to Mart H. Watrus who in turn presented it to the Colorado 

 Museum of Natural History. It was taken oh Dec. 23, 1906, at Kennicott 

 Club Lake, 3J miles east of Longmont, and was at the time associating 

 with a flock of Mallards. (Auk, XXIV, 1907, p. 211.) 



171a. Anser albifrons gambeli. American White-fronted Goose. — 

 Migrant; rare. (March 24 only date known.) 1 There is but one record 



