I 4 4 ANNALS OF SCOTTISH NATURAL HISTORY 



Lesser Whitethroats, and Whimbrels at the Fair Isle and 

 Isle of May ; Whitethroats and a Grey Wagtail at the 

 Flannans ; while from i to 3 A.M. on the 22nd and the next 

 two nights, Terns passing in numbers were heard, or seen 

 in the rays of the lantern at Fair Isle, Lerwick, and Isle of 

 May. A big rush occurred on the 25th, numbers of Snipe 

 arrived at Fair Isle and Lerwick, many Siskins at Fair Isle 

 and Isle of May, and in both these places Tree-pipits, 

 Bramblings, and Garden-warblers, along with many other 

 common species and some rareties already mentioned. Red- 

 wings arrived at Fair Isle, and next day at the Isle of May. 

 The rush continued on the 26th and 2/th, Wheatears were 

 numerous at the Isle of May and Butt of Lewis, and at the 

 latter place, large numbers of Skylarks and Meadow-pipits 

 are reported. On the 28th a large immigration of Warblers 

 took place at Fair Isle and the Isle of May, and with them 

 many birds of other species. Next day brought fresh 

 arrivals to Fair Isle, including large numbers of Greater 

 Wheatears, Bramblings, Chaffinches, Siskins, and Snow- 

 buntings, the stream slackening on the Isle of May. The 

 30th shows a continuance of migration on the Fair Isle, 

 little movement being reported elsewhere, with the exception 

 of the arrival of great numbers of Red-throated Divers in 

 St. Andrews Bay. Few Crossbills remain. In the latter 

 half of September several reports of Great Spotted Wood- 

 peckers are sent from Fair Isle and other parts of Shetland, 

 the Butt of Lewis, and Isle of May. 



October. The general distribution of barometric pressure 

 during this month was of a well-marked south-westerly type, 

 but the gradient was nearly double the normal. At the 

 telegraphic reporting stations there were only two days 

 on which the wind did not exceed the force of a strong 

 breeze, on twenty-one days the force of a gale was attained, 

 and on twelve of these, it was a strong or whole gale at one 

 or more stations. On every day of this month the weather 

 was under the influence of one or more low-pressure systems, 

 and observation at migration stations was greatly hampered 

 by the strong westerly and southerly winds which pre- 

 vailed. October opens with a fair amount of migration ; 

 from the ist to the 4th (when the weather was fine) there 



