LATE BREEDING MIGRANTS 243 



are probably amongst the earliest breeders on the tundra, 

 and pass through Ust-Zylma, whilst the later breeders 

 on the tundra are not there at all. The following birds 

 are all summer migrants to the tundra, but were not seen 

 passing through Ust-Zylma during migration : 



Yellow-headed Wagtail. Dunlin. 



Arctic Tern. Richardson's Skua. 



Siberian Pipit. Dotterel. 



Red-necked Phalarope. Sanderling. 



Long-tailed Duck. Curlew Sandpiper. 



Buffon's Skua. Little Stint. 

 Grey Plover. 



Most of these are very late-breeding birds, but why 

 they should breed late, or for what cause they seem tc 

 choose a different line of migration, seems at present 

 inexplicable. Before a conclusion can be arrived at 

 many more facts must be collected. The field of ornitho- 

 logical research is one in which any amount of work may 

 be advantageously done, and possibly the perusal of the 

 present narrative may help to arouse the enthusiasm 

 of other adventurous ornithologists, and induce them to 

 take up the running where we left it off. 



OLD RUSSIAN SILVER CROSS 



