A SUMMER ON THE YENESEI 161 



sliot at it twice as it swung past me, and missed it both 

 times. What 's hit 's history : what 's missed 's mystery. 

 The identity of the stranger will never be known for 

 certain, but from its white rump, from its size, which 

 was greater than that of our common swift, and from 

 its dull underparts, I believe that the bird was the 

 Siberian swift (Cypselus pacijicus), a native of Eastern 

 Asia, which ranges as far north as Kamchatka. At any 

 rate, a hirundine of any species is an interesting record 

 from the Yenesei tundras. 



The next movement among non-breeding species was 

 noticeable on 12th August, when, for two or three days, 

 numerous little parties of turnstones passed the island. 



The departure of the breeding birds is more 

 difficult to chronicle. The following dates are only 

 approximate, but they may give some idea of the 

 disappearance of species after species as the summer 

 declined : 



Grey Phalarope , 

 Curlew-Sandpiper . 

 Shore- Lark . 

 Red-throated Pipit 

 Arctic Tern . 

 Red-necked Phalarope 

 White Wagtail 



Little Stint . 



Temminck's Stint . 



Dunlin . 

 Ruflf 



Lapland Bunting . 

 Snow-Bunting 

 Wheatear 

 Golden Plover 

 Grey Plover . 

 Ringed Plover 

 II 



Departed August 5th. 

 „ August 15th. 

 „ August 10th. 

 „ August 15th. 

 „ August 18th. 

 „ August 18th. 

 „ August 20th. 

 „ (Most of the birds) 

 before August 25th. 

 „ (Most of the birds) 

 before August 25th. 

 „ About August 25th. 

 „ August 25th. 

 „ August 25th. 

 „ August 25th. 

 „ August 20th. 

 „ September 2nd. 

 „ August 25th. 

 „ September 2nd. 



