On the Breeding-grounds of the Rosy Gull. 333 



The Tring Museum lias " a pair from Takar (the female 



with the crown duller, sides of crown more greenish), one 



$ ? from the north coast between 130° and 137° Long., four 



from near Humboldt Bay, and two from the lower Ambernoh 



River." (Rothsch. % Hartert.) 



[To be continued.] 



XIX. — The Breeding-grounds of the Rosy Gull. — Part II. 

 By S. A. Buturlin. 



As stated in my former paper (supra, p. 131), eggs of 

 Rhodostethia rosea collected on the 26th of June were much 

 incubated, and 1 had hoped to procure nestlings immediately. 

 On the 30th of June, during a heavy snow-storm which 

 lasted all day, I visited one of the breeding-colonies near 

 Pokhodskoe, but the nests were deserted, though from the 

 actions of the parents I felt sure that the newly-hatched 

 young were not far off. Not willing, however, to disturb 

 the birds so near my house, I proceeded, on the 1st of July, 

 to another island, some two hundred paces in width, where 

 I found nests of Colymbus arcticus, Dafila acuta, Harelda 

 glacialis, and Calcarius lapponicus. The Terns' eggs were in 

 many cases already chipped, while some of those of the Rosy 

 Gull which had been purposely left were hatched, although 

 the paler second clutches were but slightly incubated. I saw 

 two young birds, but could only manage to catch one, 

 evidently two or three days old. 



Soon afterwards I left Pokhodskoe, which lies nearly in 

 the centre of the Kolyma Delta, for the north-western 

 portion, by the " Chukotskaya prot6ka" (Chukche's channel) 

 as far as the " Chdyachya zdimha" (Gulls' farm). Here we 

 were clear of the Salix- and Alnus-th\cke,is, and were on the 

 true tundra, which afforded a welcome relief to both eyes and 

 limbs. After the delay caused by a long and heavy snow- 

 storm I discovered two new breeding-colonies of this Gull, 

 one on the wet grassy border of a lake about a kilometre 



