THE IBIS. 



TENTH SERIES. 



Vol. III. No. 3. JULY 1915. 



XXII. — Notes on Bird-Migration at the Mouth of the Yenesei 

 River, Siberia, as observed in the Autumn of 1914. By 

 Maud D. IIaviland. 



During tlie summer and part of the autumn of 1914, as a 

 member of the party of Miss Czaplicka of Oxford, I spent 

 some weeks on the estuary of the Yenesei River. July and 

 August were passed at Golchika ; part of September I spent 

 at Nosonovsky Ostrov, one of the islands of the Breokoffsky 

 Group, about two hundred versts higher up the river. At 

 Golchika I was able to keep regular records of the departure 

 of the different species of birds ; at Nosonovsky, where I 

 was living on board ship, it was not possible to make obser- 

 vations on shore every day, and my notes are incomplete. 



Apart from the obvious drawbacks of making observations 

 in such an immense and uniform country as the Yenesei 

 tundra, where at any time bird-life tends to be scattered 

 and diffused, there is great difficulty in obtaining anything 

 like a just idea of the direction and magnitude of any 

 migratory movement. In England it is possible to judge the 

 trend and scope of such movement by the species or sub- 

 species that are observed to pass ; but at the mouth of the 

 Yenesei this often cannot be done, because, being itself so 



SEK. X. — VOL. III. 2 E 



