36 BIRDS AND MAMMALS OF EAST SIBERIA P' VoLV*^' 



CUCULIDAE. 



Cuculus canorus telephonus Heine. 



During June the cuckoo was abundant in all the tree-grown 

 parts of the Kolyma region, and its call could be heard anywhere 

 in the woods throughout the long summer days. It was, however, 

 exceedingly shy, and though he tried very hard, Mr. Koren did not 

 succeed in getting a specimen. 



Woodpeckers, of two or three species, also were not uncom- 

 mon in the tree growth, but never were approached within 

 gunshot. 



One reason for Mr. Koren's failure to get certain birds, was the 

 deep, melting snow which still filled large parts of the forest country 

 at the time he was collecting, and which made travelling about very 

 slow and laborious. 



HiRUNDINIDAE. 



Hirundo urbica whiteleyi (Swinh.). 



One adult male, Nijni Kolymsk, June 2, 1912. 



A large colony of this martin bred on the church in the village of 

 Nijni Kolymsk. The first to arrive came on June 2, 1912. No 

 other breeding colonies were found. 



Riparia riparia ijimae (Lonnberg). 



Sand martins were seen occasionally in June, flying about among 

 the islands in the Delta of the Kolyma. Unfortunately no speci- 

 mens were secured. 



