BREEDING COLONIES OF THE BLACK-HEADED CULL 83 



recent offshoot from the Loch Levcn guller)'. Similar small 

 colonies have occasionally bred, Mr Beveridge says, near 

 the shores of Loch Glow, Cleish Hills; these he attributes 

 to persecution at Loch Leven. 



While preparing this paper my attention was drawn to 

 a very interesting and useful one, recently published [Trans. 

 Norf. and Norw. Nat. Soc, 19 19), by Mr Robert Gurney, on 

 " Breeding Stations of the Black-headed Gull in the British 

 Isles." The paucity of records for Scotland is pointed out 

 by the author, and an appeal made for a fuller census. 

 Scottish ornithologists will, I hope, give their assistance. 

 Only two of the Forth gulleries, namely Coldingham Moor 

 and Harperrig (presumably), are, I may say, mentioned 

 in Mr Gurney's list. 



Some further Notes on "Blue" Fulmar. A specimen of 

 this interesting dark form of the Fulmar was captured at St Kilda 

 in May 1919, and was forwarded to the Royal Scottish Museum. 

 So far as the British Isles are concerned, St Kilda is the only known 

 breeding station frequented by this bird, and even there, one or 

 two, at most, occur among the countless numbers of the usual 

 form. 



Since my former notes on this dark form and its distribution 

 appeared {Scottish Naturalist, 19 14, pp. 221-225), I '"'^'^ve come 

 across some interesting observations regarding it. These were 

 made long years ago, and seem, so far as I am aware, to have 

 escaped the notice of those who have written on the subject. 

 They were made by one Fredrick Martens in the year 1671, and 

 recorded in his Voyage to Spitzbergen and Greenland a work 

 written in High Dutch, and pubhshed in Hamburg in 1675, the 

 first edition in English appearing in 1694. 



Wridncr of the " Mallemucke" the old Dutch name for the 

 Fulmar Martens remarks: "They are not always of the same 

 colour ; some are quite grey, which we take to be the oldest, others 

 are grey on their back and wings, but their head and belly are 

 white, which are the young ones. This is generally thought, but 

 I am of opinion that this difference of colour proceeds rather 

 from a difference in kind than from a difference in age; for the 

 grey ones I only saw about Spitzbergen, but the grey and white 

 ones, although I have seen some few of them at Spitzbergen, yet 



