234 
BIRDS. 
351. Larus glaucus, Faber. Glaucous Gull. 
A scarce winter visitant to the east coast. 
Not uncommon, particularly in the autumn and early winter, 
but nearly all those seen are birds of the year (0. MSS., 1868). 
Mr. James Sutherland records one killed at the North 
Head of Wick, an immature bird. We have no special 
records from Caithness of the great invasion of Arctic gulls 
which so densely populated the Firth of Forth in the winter 
of 1872-73.^ Had any great numbers visited the Caith- 
ness coast, we think they could hardly have escaped obser- 
vation. 
352. Larus leucopterus, Faber. Iceland Gull. 
Winter visitant ; not uncommon on the east coast. 
Like the preceding, this is a common autumn and early 
Mdnter visitor, in this case, too, the old birds being very 
scarce in comparison with the young (0. MSS., 1868). 
353. Rissa tridactyla {L.). KIttlwake. 
A visitant only to the east coast, generally in spring. 
Breeds abundantly in the west, at Handa, and on Bulgie 
Island ; also on the north coast cliffs near Cape Wrath, but 
not so abundantly. There are many roosting-places un- 
occupied by nests, such as one on Bulgie Island, and 
another on the east side of Eilean Garbh. 
Caithness names — " Facky" " Kitty-fachy." An abundant 
summer visitant, breeding in great numbers along the coast, 
one such station being the " Eowans," a rock of stupendous 
height some eight or ten miles from Wick. Here every 
available space has a nest (0. MSS., 1868). 
1 Vide Proc, Nat. Hist. Soc, Glasgow, Jan. 1873. 
