452 LARIDAS 
from Sutherland, Caithness, Banffshire, Aberdeenshire, Rox- 
burghshire, and the Firth of Clyde. 
In England it has been obtained in the following coun- 
ties :—Durham, Yorkshire, Lincolnshire, Norfolk, Sussex, 
Devon, Cornwall, and Somerset. Like other Northern 
Gulls it is rarer in the south than in the north. 
To Wales its visits are exceptional. 
From Ireland there are but two well-authenticated 
records :—A bird was taken in Blennerville, co. Kerry, in 
February, 1846; two were seen but only one obtained. 
This, an immature specimen, is now in the Chute Hall 
collection (Thompson, Nat. Hist. Ivel., vol. in, p. 347). A 
second was obtained near Bantry Bay, co. Cork, on Jan- 
uary 8lst, 1852; it is preserved in the Queen’s College 
Museum, Cork. 
Mr. Ussher draws attention to the fact that ‘“‘in both 
these instances the Ivory Gull visited the south-west of 
Ireland. Both the Glaucous and the Iceland Gull have 
been repeatedly obtaimed in Kerry and Cork, and so has 
the Greenland Falcon. The coasts of Western Munster 
are therefore quite within the occasional winter-range of 
Arctic stragglers, which probably come down the west 
coast’ (‘ Birds of Ireland,’ p. 348). 
According to Mr. Saunders, about thirty-five specimens 
have altogether been procured in the British Isles, more 
than half of which were adults. 
Flight.—On the wing the Ivory Gull is brisk, and often 
moyes with great swiftness; its flight, as described by 
Col. Feilden, resembles that of a Tern (Saunders). 
Voice.—The note is harsh and shrill. 
Food.—Fish are largely eaten, also offal of all kinds. 
Nest.—The nest may be built either on the ledge of a 
cliff or on the ground ; 1t is composed of marine vegetable- 
matter of various kinds, including bits of seaweeds. 
The eggs, two in number, are greenish or yellowish-brown 
in colour, blotched and scrolled with brownish-black. 
Geographical distribution.—This Arctic species 1s com- 
pletely circumpolar in its breeding-range and plentiful in 
many parts of the Polar regions of the Huropean and 
American Continents; its nesting-haunts have been found 
extending westward to long. 122° W. (Richardson), and 
eastward to long. 130° EK. (Nansen Expedition, 1894). On 
migration in winter it is met with along the coasts of 
Europe, to the North of France, and down the American 
sea-board to New Brunswick. 
