Cassell's book of birds; vol. 4

by Alfred Edmund Brehm

The GREAT BLACK-BACKED GULL (Larus marinus), one of the best-known members of the above group, has the head, neck, under surface of the body, rump, and tail pure white; the upper back and wings are black; the wing-quills tipped with white. In young birds the head, neck, and under side are white, streaked and spotted with yellow and brown; the rump and wing-covers are brownish grey, with light edges; the quills and tail-feathers are black, the latter marked with white. The eye is silver-grey and the ring around it bright red. The beak is yellow, the under mandible being red towards its apex; the foot is light greyish yellow. The length of this species is twenty-eight inches, and breadth sixty-five inches; the wing measures nineteen, and the tail seven inches and a half. The Black-backed Gull frequents the shores of Europe, and, according to Audubon, is met with in North America. In Ireland it is a resident species, and is found dispersed in abundance along the English and Scotch coasts. It breeds in Caermarthenshire on sandy flats, in the British Channel on sandy islands or steep holms, and in the marshes near the mouth of the Thames. Dr. Edmondson says, "This species breeds on the flat grassy tops of a few inaccessible holms, or small islands—as the far-famed Cradleholm, of Ness—in considerable numbers, never in cliffs, and excludes every other bird from such localities. A pair or two—we may suppose the melancholy remnant of a more numerous race—may now and then be met with on lower and more accessible, but still flat situations." It usually produces three young, which, independently of their size, may be easily distinguished from other species by the more distinct speckling with black of their grey plumage. Like all the larger Gulls, it is fond of carrion. In winter these birds feed much on starfish, a meagre and frugal diet, it must be admitted; but the abundance of herrings, in summer, amply compensates for the abstinence of winter. When flocks of Shags are enjoying their gluttonous siesta on the rocks, a Black-backed Gull is very often perched near them, and on such occasions he acts as their sentinel by giving the alarm with his hoarse voice, or taking flight when an enemy endeavours to approach within shot. His deportment is dull and solitary.

[Pg 189]

BLACK-BACKED AND HERRING GULLS.

[Pg 190]

During our travels in Norway and Lapland, we found the Black-backed Gull common enough, but it was only at Portsangfjord, towards the northern parts of the country, that we first met with their breeding-places. Upon an island in that vicinity we observed several hundred pairs, in company with the Herring Gulls. The nests of both species were placed promiscuously upon the ground, seldom more than fifty paces apart. Some of the nests were round, and carefully lined with grass, while others were more negligently constructed. A terrible uproar was raised as soon as we set foot on the island, such birds as had begun to brood remained sitting, and even allowed us to approach within a few steps of their nest, as if they thought that the fact of their presence would frighten us away. At length, however, they got up, and with loud cries flew around us at a little distance, every now and then plunging down as if to strike us, and then rising again, and taking a circuit previous to renewing the attack. Several times they flew so close over our heads that they touched us with their wings, but they did not venture to attack us with their sharp beaks. In several nests the young ones had not only managed to scramble out at our approach, but hid themselves very effectually among the long grass.

The eggs of these birds are usually three, sometimes four, in number, rough, of a yellowish grey or yellowish brown colour, tinged and spotted with dark brown and slate-grey; they are about three inches long, and rather more than two inches broad. Mr. Hewitson, who saw these Gulls breeding in the Orkney and Shetland Isles, says: "Their eggs are rich and excellent to eat; and they are in consequence a most valuable acquisition to the owners of the islands upon which they are deposited. The custom is to take the whole of the first eggs as soon as laid, and the second in like manner, allowing the birds to sit the third time. One gentleman, Mr. Scott, upon whose property they breed, and by whom we were most hospitably received, told us that he had secured sixty dozen of their eggs for winter use, though the extent of the island was scarcely half an acre."

An egg of this species was hatched in a most curious manner by a boat's crew, who kept it in a blanket by day, and near the fireplace at night. For many years this bird lived quite tame at Dartmouth, swimming in the river, and watching for the return of the fishermen, who always threw it a supply of small fishes.

THE LESSER BLACK-BACKED OR YELLOW-LEGGED GULL.

The LESSER BLACK-BACKED or YELLOW-LEGGED GULL (Larus fuscus). In the summer plumage of the adult bird, the head and whole of neck, all round, are pure white; the back, wing-covers, and all the wing-feathers dark slate-grey, the tips only of some of the longer scapulars and tertials being white, the shorter of the primaries have white tips; the upper tail-covers and tail-feathers are white, the breast, belly, and all the under surface of the body pure white, legs and feet yellow, bill yellow, inferior angle of lower mandible red; and the irides straw-yellow. The whole length is twenty-three inches, from the anterior joint of the wing to the tip of the longest quill-feather sixteen inches. In winter the head and neck are streaked with dusky brown.