The _American Otter_ is about five feet in length, including the tail, the length of which is eighteen inches. The color of the whole of the body, (except the chin and throat, which are dusky white) is a glossy brown. The fur throughout is dense and fine. The differences between this species and the European otter, are thus pointed out by Captain Sabine: ‘The neck of the American otter is elongated, not short, and the head narrow and long in comparison with the short, broad visage of the European species; the ears are consequently much closer together than in the latter animal. The tail is more pointed and shorter, being considerably _less_ than one half of the length of the body, whilst the tail of the European otter is _more_ than half the length of its body.’ The fur of the otter is much valued by the hatters and other consumers of peltries, and this animal must ultimately become as rare in North America as the kindred species has long since become in Europe. II. BIRDS. The Ornithology of the United States is exceedingly rich and interesting. For their beauty of plumage, variety and melody of song, diversity of form, habits, disposition and faculties, our birds well merit the industrious observation which has been bestowed upon them. They have been highly fortunate in their historians, for no department of our animal kingdom has been so thoroughly investigated as this; and the indefatigable labor, science and genius of such men as Wilson, Audubon, Bonaparte, and Nuttall, have left us but little to expect from future researches. The vulture called _Turkey Buzzard_, is found in large numbers in the southern states, where he is protected by law, on account of his services in the removal of carrion. This bird has never been known to breed in any of the Atlantic states north of New Jersey. In the southern cities, during the winter, they pass the night on the roofs of houses, and are fond of warming themselves in the smoke that issues from the chimneys. This bird is about two and a half feet in length, and six in breadth; the upper plumage is glossed with green and bronze, the fore part of the neck is bare. The _Black Vulture_ is smaller, and flies in flocks; the range of this bird is confined by very narrow limits to the southern states. The _Condor_ is not uncommon in the Rocky Mountains; but his peculiar residence is among the precipitous cliffs of the majestic Andes.