244 THE ZOOLOGIST. 



The Willow-Grouse is the last bird (with the exception of the 

 Snowy Owl (Nyctea nyctea) ) to leave the Yenesei estuary before 

 the winter. Mr. Trevor-Battye (op. cit., p. 430) states that this 

 bird winters on Kolguev and forms an important winter food of 

 foxes. I have the authority of the Siberians for the statement 

 that the Willow-Grouse does not winter on the Yenesei below 

 the forest growth. It was still common at the end of August, 

 when most other birds had left for the south, and it was frequent 

 in the Ereokoffsky district, about two hundred versts higher up 

 the river, throughout September. The natives said that it 

 sometimes lingered on into October, when the blizzards finally 

 buried the willows. 



