Upon the mountain lakes of Southern Norway the Velvet Scoters breed with tolerable regularity; and further to the north there is hardly a sheet of water of this description, if not too remote from the sea, upon which their young are not to be found. About the middle of June their rudely-constructed nests may be met with hidden in bushes or high grass, or amid tufts of rushes. The nest itself is constructed of coarse sticks, stalks, and leaves, loosely heaped together, and lined with down plucked from the body of the female. The eight or ten eggs constituting a brood are elongated, smooth, and shining, and of a reddish yellow colour. The young remain in their native lakes until fully able to fly, and do not betake themselves to the sea till the end of October. * * * * * The FEN DUCKS (_Aythya_) are handsome, strongly-built birds, with moderately long beaks, which are not dilated at the base; short, broad-soled feet; moderately long, pointed wings, and smooth plumage. The range of the members of this group extends from the Arctic Circle to the tropics. They do not inhabit very high latitudes, and only visit the south during their migrations. They may, therefore, be considered as properly belonging to the temperate zone. During the winter months they are to be met with in Southern Russia and the low countries bordering on the Danube, also in Greece, South Italy, Spain, and throughout the north of Africa. These birds make their migrations by night, great numbers of them flying together in large flocks, generally without any regular order, but sometimes arranged in converging oblique lines. In the spring they are usually seen in pairs or in small parties. During the summer they visit lakes of fresh water, large ponds, morasses, or fens having a considerable surface of water of sufficient depth, sometimes resorting to smaller ponds which may happen to be in the neighbourhood. As regards their locomotive powers, these Ducks are decidedly the best endowed of their family--they can walk tolerably well, but, being very unwieldy, they do not willingly come upon dry land, and then only to repose upon some sandbank, or beat up any masses of reeds that may be lying on the margin of the pond. When swimming their body is not so deeply immersed as is that of some of their congeners; they cut through the waves, however, with the same rapidity, and dive as quickly as any of their neighbours. Their flight is hasty and performed by frequent strokes of their wings, that make a perceptible rushing sound, but do not propel them very quickly through the air; nevertheless, they do not seem to become fatigued so quickly as might be expected.