REPORT ON SCOTTISH ORNITHOLOGY IN 1910 205 



while on the 3Oth flocks of Geese were passing over 

 Beattock and Crosswood Reservoir. Long-tailed Duck are 

 reported on the 3Oth from Gott Bay (Tiree) and Tarbetness. 

 During September a Crossbill was obtained at Ollaberry 

 (Shetland), and an Osprey was seen on Tweedside on 

 autumn migration. 



October. For the whole month the distribution of 

 pressure differed widely from the normal. Instead of a 

 gradual increase in the values from N. to S., the highest 

 mean pressure was shown in an area having its central 

 space on the east side of the North Sea and extending 

 west across these islands. Pressure was low off the mouth 

 of the English Channel and north-west of Iceland. There 

 was a great deal of migration during October, increasing in 

 intensity in the latter half of the month, when a large 

 immigration of northern species took place. Throughout 

 the month large numbers of Redwings were coming south, 

 rushes are recorded on the 2nd and I ith, and a big one on 

 the 1 5th. Missel-thrushes, Fieldfares, Song-thrushes, and 

 Blackbirds were also on the move. From the i6th to the 

 end of the month (wind mainly easterly) one continuous 

 vast immigration of Turdinse took place ; the species affected 

 were mainly Redwings and Fieldfares, but Missel-thrushes, 

 Song-thrushes, and Blackbirds also occurred in considerable 

 numbers. The stations recording this rush are : North Unst, 

 Lerwick, Fair Isle, Sule Skerry, Fentland Skerries, Cape 

 Wrath, Butt of Lewis, Flannans, Barra Head, Mull, Tiree, 

 Skerryvore, Carmyle (Clyde), Cathkin, Glasgow, Beith, 

 Tarbetness, Bell Rock, Isle of May, Bass, Largo, Kirkliston, 

 Saltown, and Glenorchard. Up to the i6th (wind W. and 

 N.) Wheatears and Greater Wheatears were constantly on 

 the move, and many reports come of the arrival of Bramblings 

 all from Orkney, Shetland, and the East Coast, with the 

 exception of Mull whence they are recorded on the I3th. 

 Siskins and Greenfinches arrived at many of our lighthouse 

 stations during October, several Hoopoes were seen, and 

 Golden Plover and Lapwing were on the move. On the 3rd 

 Swallows arrived on the Isle of May from the East, a great 

 Skua was seen there (1.1911.6), and one occurred near the 

 Bell Rock. From the 3rd to the 5th there was a decided 



