26 REPORT ON THE MIGRATION OF BIRDS. 



Returning to 1886 : — By March 12th to 22d, numbers of 

 Guillemots and Razorbills rushing by thousands on the latter 

 . date at Isle of May, the only station sending returns for March. 

 In April, abundance of Razorbills and Puffins on the rocks by 

 14th at N. Unst ; but the note (1886) is given on date of 7th, 

 " not so early as last year." Puffins arrived " after : M.W., 

 light breezes. First arrival later than usual." By the 22d 

 160 Puffins (estimate) settled down to breed on the rocks as 

 usual at N. Unst. 



At Pentland Skerries, Puffins arrived on the 11th April ; and 

 Common Guillemots were seen passing east on the 23d — mod. 

 S.E. wind. At Isle of May, a large number on 6th April and on 

 12th. By the 18th May, Puffins u are now laying " at Isle of 

 May. By 11th June, young were first seen at N. Unst of 

 Puffins and " Tysties." No records in August. 



On September 2d, all Marrots, Razorbills, and Puffins left the 

 rock at N. Unst ; but on October 18th, Tysties re-appeared 

 (three in number) — with N.N.E., strong breeze — and stayed six 

 days. No other records. 



Columbid^e. — Divers — Great Northern, Black-throated, and 

 Red-necked Diver. — No account taken. 



