174 THE SCOTTISH NATURALIST 



Islay (L.), and Little Ross (L.), evidently caused by the severe 

 weather conditions prevailing during that period. From 18th 

 February to 17th March there are many records of migration from 

 stations in our south-western area, and from 19th to 25th April 

 Little Ross and the Rhinns of Islay send notes of numbers at the 

 lanterns. On 26th March and from 30th April to 2nd May 

 emigration is reported from stations in Orkney and Shetland, while 

 arrivals, doubtless of passage migrants going overseas, took place 

 on the Isle of May on 9th and 10th May. 



From 29th July to 10th August a little movement is noted at 

 Swona, while a small immigration is recorded from our Northern 

 Isles between nth October and 4th November. As is the case 

 with all the Turdinge in 191 7, the numbers arriving in autumn were 

 far below the normal. Several Blackbirds struck the Little Ross 

 lantern on 3rd November, and the Pladda lantern at 9 p.m. on 

 20th November, and 4 a.m. on 24th November. 



The Wheatear, (Enanthe cenanthe oenanthe. The general 

 arrival of Wheatears was late in 1917; the earliest records are from 

 Dunure on 26th March, Beith on 6th April, Little Ross (^ in 

 snow) on 10th, Glenorchard and Galson on 15th, and North Berwick 

 on 22nd April. After this there are many notes of Wheatear 

 migration up to 23rd May; the breeding-birds seem to have been 

 present in all parts by about 9th May, and the proportion of 

 records from our island stations and lanterns increases as the 

 dates get later, this showing passage migration to be the later 

 phase of the movement. A Wheatear visited the Isle of May on 

 2nd June. 



By 22nd July the autumn trek had begun, and from this time 

 till 2 1 st September steady movement is recorded all over Scotland 

 from island and mainland stations alike, but always in small 

 numbers. Last seen at Beith and Swona on 21st September, 

 Rothes (E. Ross) on 26th, Bathgate on 28th, and near Eyemouth 

 on 29th September, and Darvel on 1st October. The comparative 

 earliness of these last dates, and the absence of any numbers of 

 birds, suggest the scarcity or absence of passage migrants. 



The Greater Wheatear, CEnanthe ce?ia?ithe leucorrhoa. Is 

 recorded in small numbers from Swona from 6th to 13th May, a 

 female at Dundee on nth and 12th May, and some at the Isle of 

 May on 12th and 15th May. Autumn passage is noted at Swona 

 from 22 nd August to 7 th September and on 19th September, in 

 Largo Bay on 10th September, and at Girlsta, Tingwall, from 

 2nd to 4th October. 



