The Shieldrake ([Fig. 93]) is the most remarkable of all the Duck tribe, not only from its size, but from its beauty, and the elegant variations of its plumage. It is larger and stands higher on its legs than the Common Wild Duck. The plumage is full, soft, and blended; the feathers of the head and upper neck are small and silky. The colours are very brilliant, being of a glossy blackish green on the head and neck, with purplish reflections in some lights; a broad band or ring of white is found on the neck, and lower another of orange-red encircles the fore part of the body. The rest of the under parts are white, with a band of glossy black on the breast and belly; the back white, variegated with black, white, russet, and green. The Shieldrake abounds on the coasts of the Baltic and North Sea; it is also found in America, and on the southern coasts of France, as well as on the edge of the Northern Ocean. The nest is usually placed in some indentation in the sand, the female frequently choosing a Rabbit's hole, which is often situated in sand-banks. The poor Rabbit, thus turned out of its burrow, never ventures to return to it again.
The Eider Duck.
English Synonyms.—Eider Duck: Montagu. Common Eider: Selby. White-backed Eider: McGillivray. Popular names: St. Cuthbert's Duck, Dunter Goose.
Latin Synonyms.—Anas mollissima: Linn., Latham, Temminck. Somateria mollissima: Jenyns, Bonaparte, McGillivray, Selby.
The Eider Duck, though remarkable for beauty of plumage, is nevertheless a very clumsy bird. In form it is bulky, depressed, and elliptical, with large, oblong, and compressed head. The plumage is dense and fine; the head-feathers are short, tufted, and rounded, and, blending with the terminal filaments, disunited; the wings diminutive, concave, narrow, and pointed, the tips of which extend to the base of the tail, which is short, round, and slightly decurvated.
The Eider Duck is the northern bird which supplies the soft, light, and warm material which is so well known under the name of "eider-down." Its plumage is whitish, but the upper part of the head, its belly, and its tail are black; the side of the head, the throat, and the neck are white, but the hair-like feathers on the back part of the cheeks and nape are of a delicate pale green; the lower part of the neck is cream-coloured. The black parts from their glossiness are conspicuous, while the white look soiled; the head and back are also shaded with a green tint.
The Eider Duck is found in the Arctic and Antarctic regions, occurring in diminished numbers in the latter. In the Outer Hebrides it has many breeding-places, and some nests occur on the Bass Rock, and on the Farn Islands, off the coast of Northumberland, where the eggs have been found in the month of June. The nest is made in some hollow in the turf, and is composed of sea-weed and dried grass, mixed with such marine plants as Plantago maritima and Coronopsis. The eggs, which vary in number, are of a longish oval shape, smooth and glossy, and of a pale greenish grey. When they have been laid, the female is said to pluck the down from her breast and cover them over with it. This down, when shaken out, will occupy a space of nine or ten inches. This peculiar quality of the down, however, caused by its elastic character, belongs to all the Anatidæ, and probably not less so to the Anserinæ.
The principal home of the Eider Duck is on the bleak and frozen sea-coasts of Northern Europe, and its food, which is obtained by diving, is the bivalve mollusca; also crustacea, fishes, and fish-spawn, together with aquatic worms. It makes its nest on rocks washed by the sea. Sometimes two female birds lay in the same nest, which then contains from nine to ten eggs, for each of them lays from four to six. The nest is roughly built with sea-weed, but it is lined inside with a thick layer of the bird's own down. "The Eider Ducks," as we learn from Willoughby, "build themselves nests on the rocks, and lay good store of very savoury and well-tasted eggs; for the getting of which the neighbouring people let themselves down by ropes dangerously enough, and with the same labour gather the feathers, or eider-dun, our people call them, which are very soft and fit to stuff beds and quilts; for in a small quantity they dilate themselves much, being very springy, and warm the body above any others. These birds are wont at set times to moult their feathers, enriching the fowlers with this desirable merchandise." "When its young are hatched," adds the English naturalist, "it takes them out to sea, and never looks at land till next breeding-time, nor is seen anywhere about our coasts."
There seems to be some considerable difference between the down taken from the dead bird and that which the female plucks from her breast. The lightness and elasticity of the latter are such that two or three pounds of it squeezed into a ball which may be held in the hand will expand so as to fill a quilt large enough to cover a bed. When the female prepares her nest, she lines it as above mentioned; when she has laid her four or six eggs, which are about three inches in length and two in breadth, she strips herself a second time; should this down be abstracted, as it generally is, and she is unable to supply more, the male submits himself to the same plucking process, his contribution being known by its paler colour.
The haunts of a bird yielding so valuable an article are carefully watched, and proprietors do everything in their power to attract them to their land; and in Scotland and Norway the districts resorted to by the Eider Ducks are strictly preserved, everything likely to disturb them being carefully guarded against. Pennant thus records a visit he paid to one of their breeding-places in the Farn Islands on the 15th of July, 1769:—"I found the Ducks sitting," he writes, "and I took some of the nests, the base of which was formed of sea-plants and covered with the down. After separating it carefully from the plants it weighed only three-quarters of an ounce, yet was so elastic that it filled a greater space than the crown of the largest hat. These birds are not numerous on the isles, and it was observed that the Drakes kept on the side most remote from the sitting-places. The Ducks continue on the nest till you come almost to them, and when they rise, they are very slow fliers. The eggs are of a pale olive colour, large, glossy, and smooth; they are from three to four, warmly bedded in down." Sir George Mackenzie, in his "Travels in Iceland," says that "the boat in its approach to Vidöe passed multitudes of Eider Ducks, which hardly moved out of the way; and between the landing-place and the governor's house it required some caution to avoid treading on the nests, while the Drakes were walking about even more familiar than common Ducks. The Ducks were sitting on their nests all round the house, on the garden wall, on the roof, in the inside of the house, and on the chapel."