EAST COAST OF SCOTLAND. 29 



July 25th, Pentland Skerries, continuous and large flocks of 

 Herring Gulls flying round all day ; N., clear. 



July 28tli, Pentland Skerries, three *' Chasers" (one flying E. at 

 3 p.m., and one flying S. at 5 p.m.) ; mod. S.W., clear. 



July 29th, Pentland Skerries, one "Dirty Allan" seen. 

 Aug. 6th, Pentland Skerries, large flock of young Gulls on rocks 

 all day; light S., clear. 



Aug. 7th, Pentland Skerries, large flock of young Gulls on rocks, 

 3.30 p.m. ; fresh N.W. 



Aug. 20th, Pentland Skerries, one *' Chaser" flying S.E., 12.50 

 p.m. ; strong S.E., haze. 



On 15th, at Dunnet Head, Gulls leave breeding-places in 

 cliffs. Our correspondent includes both ''Chasers" and a 

 " Dirty Allan," both of which names I held as applicable to 

 the commonest species of Skua ; but here they seem to be 

 divided, as applying to two different species, probably Kichard- 

 son's (common) Skua and the Pomatorhine Skua. 



" Dirty Allans " are again recorded from Isle of May, along 

 with a rush of small birds on Sept. 23rd ; and in this case I 

 doubt not Mr. Agnew applies the name to Eichardson's Skua. 

 This is the only September record. In October only two records 

 at N. Unst ; two pairs of Iceland Gulls stayed two days, coming 

 on the 4th with fresh N. and clear ; and two pairs more on 21st 

 hovering round at 11 a.m. ; fresh N., clear. 



In November and December the greatest movements are 

 noticed, which I give in detail : — Nov. 2nd, Pentland Skerries, 

 several Kittiwakes flying S.E., noon; fresh S.W. Nov. 10th, 

 Isle of May, thousands of Gulls (?) ; W. gale, clear ; first seen at 

 4 a.m., wind shifting to north. Nov. 11th, Isle of May, all the 

 above gone; light N.W., clear. These may have been Glaucous, 

 from description, but this is not clear ; and from subsequent records 

 I have preferred to consider them Herring, though Mr. Agnew in- 

 cludes the latter later by name, I believe Mr. Agnew knows the 

 Glaucous and Iceland Gulls well. Land Note. — There has not 

 been a large migration of Glaucous and Iceland Gulls at Kincar- 

 dine on Forth for many years. 



Nov. 17th, Isle of May, hundreds of Herring Gulls came from 

 S.E. all day; light N.W. " Grey Gulls" mixed with Black- 

 backs, the latter one in twenty. 



