REPORT ON SCOTTISH ORNITHOLOGY IN 1917 171 



The beginning of the autumn movement is noted at the end 

 of July and this continued throughout August, most having left 

 by the end of the month. Last seen Swordale, on 13th September, 

 Bathgate and Dundee 16th, Isle of May 17th, Methven Castle 

 22nd, and Dupplin 26th September. There are no records of 

 passage migrants from our stations in the Northern Isles this 

 autumn, nor are there the usual reports of large numbers on the 

 east coast, this being no doubt due to the diversion of the stream 

 of passage migrants from our shores, caused by the weather 

 conditions existing during the migration period. 



The Wood-warbler, Phylloscopus sibilatrix sibilatrix. Is 

 recorded on 4th May from Duns and Darvel, on 6th May from 

 Cathcart and Giffnock, on 14th May from Treigside, and on 23rd 

 May from near Largo. In autumn single birds are reported 

 from Vallay, N. Uist, on 6th August, the Isle of May and Loch 

 Druidibeg, S. Uist, on 26th August, and at the last place next day 

 (1. 1918, 102) see p. 149. Last seen Summerston 26th August. 



The Grasshopper- warbler, Locustella ncevia navia. A 

 Grasshopper - warbler was killed at the Little Ross lantern on 

 1 4/ 1 5th May, and one is recorded from Kilmacolm on 15th 

 May. 



The Sedge-warbler, Acrocephalus scha>nobcz?iiis. Is reported 

 from Summerston on 2nd May, Duns next day, Darvel and Beith 

 on the 4th, Invergowrie and Kilmacolm on the 6th, and Swordale 

 on the 7th May. After this arrivals are recorded from the Little 

 Ross lantern and breeding stations up to 20th May, by which time 

 the nesting birds seem to have been widely distributed. On 

 1 7/ 1 8th July and on the evening of 13th August several Sedge- 

 warblers struck the Little Ross lantern, one visited the Isle of May 

 on 21st August, and the last for the season is reported from Murthly 

 on 27th August. 



The Garden-warbler, Sylvia borin. Was late in arriving 

 in 191 7: the records are from the Isle of May and Rouken Glen 

 on 13th May, Darvel on 17th May, the Little Ross lantern each 

 night from 17th to 20th May, and Cathcart and Duns on the last 

 date. On 13th and 27th August single birds visited the Little Ross 

 lantern. 



The Blackcap, Sylvia atricapilla atricapilla. Arrivals are 

 recorded from Cathcart on 6th May and Duns on 20th May. 



The Whitethroat, Sylvia communis communis. This is another 

 species that was dilatory in arriving in 191 7 : the earliest records are 



