20 REPORT ON THE MIGRATION OF BIRDS. 



has the note, — to date of the 19th of September, — " I am sur- 

 prised at so few birds with such thick fog." Log, light to 

 strong E., thick fog, or haze between the 12th and 19th, yet 

 migration was tardy. 



Silviin.e. — At Cromarty, Robins disappeared March 24th. 

 We have then spring records from Sumburgh Head, Pentland 

 Skerries, Bell Eock, and Isle of May, all in April. Earliest at 

 Sumburgh Head, April 1st, when four appeared, strong S.E., 

 haze, but the remark is added, " First time Robins have stayed 

 all winter." Next records not till 28th, 29th, and 30th, at Bell 

 Rock, Pentland Skerries, and Isle of May, where there was a 

 rush along with Ring Ouzels. The record at Bell Rock (28th) 

 is one of very few records between the 9th of April and the 3rd 

 of September. 



In autumn, one return on Aug. 25th, as arriving at Cromarty, 

 light S.W., clear. No more till Nov. 3rd, when " a few " at Isle 

 of May. But next day a rush of other species (see under 

 Turdid^:). There were, however, a few Robins frequenting Isle 

 of May in September and October, and even the indication of a 

 rush. 



Phylloscopin^. — Only a slight indication in spring of Gold- 

 crests' migration, 2nd, 8th, 16th of April, single records at 

 N. Unst and Pentland Skerries. But of Warblers a rush at Isle 

 of May, along with Redshanks, and Robins and Ring Ouzels (see 

 Thrushes), and in May one Wood Warbler at Isle of May; 

 light S.W. 



In autumn : — Goldcrest, earliest appearance at Jsle of May, 

 Aug. 31st (a female), along with a Sedge Warbler, light W., haze ;• 

 then on Sept. 1st, one at Isle of May, and a few light records, 

 7th, 8th, 10th, 18th, and 27th. On 7th at N. Unst ("only the 

 second occurrence of it observed here"), and intermittent and 

 light till 4th Oct., when, during darkest time and total eclipse of 

 the moon, I assisted in capturing and identifying twelve Gold- 

 crests at I. of .May lantern, about which I may have more to say 

 in the " General Remarks." Again, on the 24th, numbers were 

 seen, with light S. wind. Some Chiffchaffs seen at I. of May on 

 Sept. 11th, and one at lantern on 27th (seen by J. A. H. B.). 

 This constitutes all the important records of the species of 

 ritylloscojrince. 



Titmice. — The only spring records of " Titmice " are 12th, 



