Nov., 1907 



179 



EGGS OF THE ROSY GUI.Iv 



By JOHN E. THAYER 



I HAD the good fortune to obtain from Mr. S. A. Buturlin, a Russian Ornitholo- 

 gist, some eggs of Ross's Gull {Rhodostethia rosea), also a chick and a pair of 

 adult birds in full breeding plumage. It was Mr. Buturlin who first found in 

 1905 this beautiful Gull breeding on the delta of the Kolyma River in northeast- 

 ern Siberia. 



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ADULT MALE OF THE ROSY GULL; FROM MOUNTED SPECIMEN IN THE COLLECTION OF 

 JOHN E. THAYER; ABOUT ONE-HALF NATURAL SIZE 



EGGS OF THE ROSY GULL; ABOUT ONE-HALF NATURAL SIZE 



In an interesting article which was published in The Ibis he says that it was 

 May 30, 1905, that he saw the first ^ Rosy Gull. On June 13th, the day on which 

 the ice on the Kolyma broke up, several clutches of eggs of this species were 

 brought to him, all incubated. They breed in s mall colonies of from two to three 



a. Mr. Buturlin in his article always speaks of Rhodosieihia rosea as Rosy Gull; which I think a most appro- 

 priate name. 



