278 Felger, Colorado Water Birds. [$JJ* 



54. Larus delawarensis. Ring-billed Gull. — Common in migration 

 and in summer, but not known to breed. (About March 10-about Nov- 

 ember 15.) Flocks of from five to seventy-five may be noted in mid-sum- 

 mer at almost any time along the Barr Lake Chain. 



[58. Larus atricilla. Laughing Gull. — Migrant; very rare in near-by 

 district. (December, only month recorded.) Colorado's only record is 

 that of a specimen taken at Sloan's Lake, Denver, in December, 1889, and 

 reported by H. G. Smith. (Nid., Ill, 1896, p. 48.)] 



[59. Larus franklini. Franklin's Gull. — Migrant; rare in adjacent 

 and near-by localities. (May 8; about November 12.) One taken by W. 

 G. Smith, at Loveland, and one reported by A. W. Anthony as having come 

 from near Denver; both recorded by Cooke. (Birds of Colo., p. 51.) 

 Hugo Todenwarth, a Denver taxidermist, reports that on November 13, 

 1902, he received from W. H. Englesole one of this species in the flesh to 

 mount. Miss Jennie M. Patten reports to Judge Junius Henderson that she 

 saw a Franklin's Gull May 8, 1905, near Yuma.] 



[60. Larus Philadelphia. Bonaparte's Gull. — Migrant; rare in 

 adjoining and near-by areas. (Fall, and apparently spring also.) Cooke 

 reports that this species has been taken near Fort Collins, and that it is 

 said to be not uncommon locally, adding that nearly all were taken in the 

 fall. (Birds of Colo., pp. 51, 193.)] 



[62. Xema sabinii. Sabine's Gull. — Migrant; rare in near-by and 

 adjoining districts. (October 1-December.) Cooke mentions five speci- 

 mens from Denver, Boulder, Loveland, and Fort Collins, all noted from 

 October to December. He also states that E. L. Berthoud says that these 

 gulls were not uncommon in early days, but have disappeared in late years. 

 (Birds of Colo., pp. 51, 155.) Two of the above are records of H. G. 

 Smith's, one for October 1, and the other bearing no date. (Nid., Ill, 

 1896, p. 48.) I have in my collection a young bird presented to me by 

 Hugo Todenwarth. It was shot November 17, 1902, supposedly near 

 Denver; collector unknown to the writer.] 



69. Sterna forsteri. Forster's Tern. — Summer resident. (April- 

 October 7.) In summer, common locally; more common in migration. 

 Quite a number breed regularly along the Barr Lake Chain upon the lake 

 shores and upon masses of dead, floating cattails and rushes. Have noted 

 flocks of one hundred, or more, in May, and flocks of from thirty to forty 

 through June and July. Have taken sets of eggs on May 19, in none of 

 which was incubation begun. 



[71. Sterna paradisaea. Arctic Tern. — Migrant. (Spring-July 9) 

 Very rare in adjacent and near-by localities. Cooke states that Wm, 

 Osburn has an adult male taken at Loveland July 9, 1889 (Birds of Colo., 

 p. 51.) H. G. Smith states that one was shot near Denver in the spring of 

 1887. (Nid., Ill, 1886, p. 48.) There are no other Colorado records.] 



77. Hydrochelidon nigra surinamensis. Black Tern. — Summer resi- 

 dent. (April-October.) Common locally both in summer and in migration. 

 Breeds alone; the Barr Lake Chain in localities similar to those of Forster's 



