BIRD-MIGRATION AT ST KILDA 201 



1th October. — South-west, light ; a day of continuous 

 pouring rain, 



%th October. — North-west, fresh breeze. Left St 

 Kilda at ii a.m. for Braes-cleit, Isle of Lewis. 



Great Shearwater, many off island ; Sooty Shear- 

 water, several off Boreray ; Great Skua, one off Boreray 

 and others seen ; Richardson's Skua off Boreray and at 

 intervals on voyage ; Pomatprhine Skua, several seen. 



In 191 1, the weather from the ist September to the 

 3rd October had been persistently of the westerly type 

 and unfavourable for the appearance of migrants from 

 continental Europe. On the latter date it changed, and 

 easterly breezes and calms prevailed down to the 12th, 

 my last day at St Kilda. 



During this favourable period, immigrants from the 

 north-east appeared, some of them in numbers, and 

 included Chaffinches, Bramblings, Greenfinches, Sky- 

 larks, Redwings, Fieldfares, Blackcap, Lesser White- 

 throat, Willow- Warbler, Chiffchaff, and Woodcocks. 

 In addition, Mealy Redpolls, Mallard, Wigeon, Pintail, 

 Long - tailed Ducks, Golden Plovers, Snipe, and 

 Slavonian Grebe were also among the late arrivals. 

 Some of these had been previously observed, but as 

 their summer range includes Iceland, they may have 

 been arrivals from the north-west. 



