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 and foot greyish blue. The length is nineteen inches, the breadth thirty inches; the length of wing eight inches and a half, and the length of tail three inches. In the female, which is smaller than her mate, the head and hinder neck are brown, the bridles black, the throat and under part of the body white, the feathers of the mantle grey, the upper breast and sides whitish, transversely waved with black. After the summer moult the dress of the male very much resembles that of the female. The real habitat of the White-headed or Dwarf Goosander, as it is sometimes called, seems to be in Northern Asia, from whence it extends westward into Northern Europe, and eastwardly into the northern parts of America. During the winter months, however, it wanders far southward. It is then to be met with in considerable numbers throughout the whole of China, being more especially abundant in the northern provinces of the Celestial Empire. It is, moreover, a regular visitant to Northern India, and is not unfrequently seen in Central and in Southern Europe. It seems to be more scarce in the Southern Provinces of the United States of North America, for Audubon informs us that in the western division, at least, it was a bird of unusual occurrence. In very hard winters it makes its appearance in Germany, as early as the month of November, but more usually not until the middle of December, returning again to the north in February or March. It is likewise a winter visitor to the shores of Great Britain, large numbers being sometimes seen on the eastern or southern coasts of England. It is rarely found north of the Humber, and is comparatively rare in Scotland and Ireland. In some parts of Switzerland it may be met with even so late as the beginning of May. This species is generally only to be found in the neighbourhood of fresh-water lakes, sometimes, but only casually, it may be seen in quiet bays upon the sea-coast, more especially in such as are at the mouths of rivers. Unlike the Divers, it seems to prefer flowing streams to stagnant water, and often wanders along the course of rivers, from which it only makes excursions to such lakes and ponds as may be free from ice. When walking, the Dwarf Goosander holds its body in a horizontal position, with its head retracted; it walks with a waddling gait, but better than the generality of its near allies. When swimming it keeps itself about half submerged, and when it dives it stretches itself out to its full length, and disappears in an instant. Its flight, which very much resembles that of the smaller Ducks, is rapid, straight, accompanied by a slight whirring of the wings, and is generally but little elevated above the surface of the ground or of the water. It is remarkably lively in its disposition, and even during the bitterest cold weather is sprightly and active.

These birds may generally be recognised by the manner of their diving; the True Divers, after their plunge, generally reappear close to the spot where they went down, but the Goosanders swim while under water to a considerable distance, shooting along like a pike or a trout, and as they can keep submerged for a minute at a time, it is not easy to calculate where they will come up again. They live principally upon small fishes, crustaceans, and aquatic insects, and in confinement, at least, do not refuse vegetables; they will also eat bread greedily. In catching fishes they are quite as skilful as the larger Divers, and it is very interesting to watch a flock of them thus employed. Now you see them swimming altogether; in a moment they all vanish at once, and the water becomes disturbed by their movements underneath; at length they come up again one after another, but widely separated, and often from thirty to fifty yards from the place where they went down. Again they congregate, and anon they dive again; some of them coming up perhaps close to the shore. Sometimes they are obliged to procure their food through small holes in the ice, often not a foot square, and to pursue their game beneath the frozen surface, only presenting themselves every now and then at the aperture for a supply of air. Their power of seeing under the water must therefore be very good, or they would never be able to find the broken place at which to emerge. Where the supply of food is scanty they will rake up the bottoms of ponds, in search of frogs or insects. The habit of diving all at once is peculiar to the Goosanders, and the explanation of this manœuvre