REPORT ON SCOTTISH ORNITHOLOGY IN I917 169 



The Rock-pipit, Anthns spinoletta petrosas. Arrivals are 

 reported from the Isle of May on 8th May and 29th October; 

 these may have been the Scandinavian form A. s. littoralis. 



The Blue-headed Wagtail, Motacilla flava flava. See 

 p. 149. 



The Yellow Wagtail, Motacilla flava rayi. Is first recorded 

 from Summerston on 25th April, Beith on 28th, and Thornliebank 

 on 29th April, after which arrivals are reported up to 13th May. 

 Had begun to move in the Summerston district by 5th August, four 

 were seen at Little Ross on 10th September, and last records 

 come from Beith on 19th and Summerston and Giffnock on 23rd 

 September. 



The Grey Wagtail, Motacilla cinerea cinerea. Returns to 

 breeding- places are recorded during April, and single birds in Largo 

 Bay on yth and 14th May. On 29th August a Grey Wagtail 

 appeared at Grogary (O.H.), and some movement is reported from 

 the mainland in September and October. 



The White Wagtail, Motacilla alba alba. A White Wagtail 

 struck the Little Ross lantern on 12th March. One appeared 

 at Largo on 10th April, passage being noted on the east coast up 

 to 1 2th May and along the west coast from 14th April to 16th 

 May. On 25th April two visited North Unst, several were at 

 Fair Isle on 12th and 14th May, and one at North Unst on 

 24th May. 



Return movement is noted in Orkney and Shetland from 22nd 

 August to 2nd September, along the west coast from 26th August 

 to 7th September, and along the east coast from 10th to 29th 

 September. 



The Pied Wagtail, Motacilla alba lugubris. Returns of 

 Pied Wagtails to their breeding-places are recorded steadily from 

 15th March to 30th April, this being unusually late. Two visited 

 Sule Skerry on 25th April and one was on Swona on 2nd May. 

 From 1 6th August to 12th October movement is recorded pretty 

 steadily from many of our mainland stations, and Pied Wagtails 

 visited Swona on 10th and 15th September, and Dhuheartach on 

 15th and 23rd September. 



The Goldcrest, Regulus regulus. No species of bird shows 

 the influence of weather on its migrations more clearly than the 

 Goldcrest. It is strongly attracted by light and familiar to every 

 observer, and in seasons in which easterly conditions prevail great 

 numbers visit our shores from overseas. In 191 7 the only record 



