202 THE SCOTTISH NATURALIST 



April to 9th May. An immature bird is reported on loth October 

 from the Tay Estuary, and two there on 1 7th October. 



The Slavonian Grebe, Colymlnis miritus. — Is recorded from 

 Largo Bay up to nth March, and from Hoy High up to 19th April, 

 and two in breeding dress were seen in the Dornoch Firth on 13th 

 April. Single birds were observed at Lerwick on 2 5lh September 

 and Largo Bay on 17th and 19th November, 



The Red-necked Grebe, Colymhiis griseigena griseigena. — A 

 female was obtained at Fair Isle on 9th February (i. 1916, 79). 

 See p. 152. 



The Great Northern Diver, Gavia imnier. — There are many 

 records of this species up to 7th May, and single birds are noted at 

 Hoy High on 12th May, Holy Island on 20th May, Luce Bay on 

 2ist May, Mull of Galloway on 24th May, and Galson (O.H.) on 

 28th May. Is first noticed in autumn in Largo Bay, where two 

 birds were seen on 24th September, Rattray Head on 9th October, 

 and the Dornoch Firth on 27th October. 



The Black-throated Diver, Gavia arctica. — Single birds are 

 recorded from Luce Sands on 26th February, and Largo Bay on 

 24th September and 17th December. 



The Red-throated Diver, Gavia stellata. — Is recorded 

 commonly up to the end of April ; " quite a lot " were at Balcomie 

 (E. Fife) on 5th May, and two at Hoy High on 12th, i6th, and 17th 

 May. Six Red-throated Divers appeared off Rattray Head on 19th 

 September, and there were a good many in Largo Bay on 27th 

 October. 



The Wood-pigeon, Columba pabwibus palumbus. — A Wood- 

 pigeon is reported from Fair Isle on 5th and 6th January, and about 

 mid-January the species was unusually plentiful about Gask (Perth- 

 shire) and Glenorchard. One or two are recorded frequently from 

 Fair Isle between loth April and 9th June, and single birds at the 

 Isle of May on 23rd April, nth and 17th May, and at Lerwick on 

 Sth June. On 24th May a flock of fifty was seen in a cabbage 

 patch at the Mull of Galloway far from any wood. On 9th, nth, 

 and 1 2th October a Wood-pigeon visited Pentland Skerries, the 

 Isle of May records one on 19th October, and great flocks 

 arrived in East Fife in the latter half of November. 



