The family of Alcadæ, comprising the Guillemots, Auks, Razor Bills, and Puffins, is in form of body very similar to the Divers: the legs, which are short and thick, are inserted very far back, and give a still more erect carriage to the bird when on shore. The wings are short and small in proportion to the bulk of the body, and in the (now probably extinct) Great Auk, so much so as to be unfitted for flight. The Auks are strictly sea-birds, and nestle on its borders, breeding in caverns and rocky cliffs, and laying only one large egg. They obtain their food by diving, at which they are very expert. They are of social habits, and congregate in vast flocks on the rocky islets and head-lands of the northern coasts. At the head of the Magdalen Bay, on Spitzbergen, for instance, there is a high pyramidal mountain of granite, termed Rotge Hill, from the myriads of small birds of that name (Little Auk, Alca alce), which frequent its base, and which appear to prefer its environs to every other part of the harbour. They are so numerous that Admiral Beechey frequently saw an uninterrupted line of them extending full half-way over the bay, or to a distance of more than three miles, and so close together that thirty fell at one shot. This living column, on an average, might have been about six yards broad, and as many deep; so that allowing sixteen birds to a cubic yard, there must have been nearly four millions of birds on the wing at one time.

The calling or crying of the rotges amongst one another sounds at a distance as if you heard a great many women scolding together; so that the noise of millions uniting in a chorus must be terrific. On a fine summer's day, when a glorious sunshine gilds the snow peaks and glaciers of Spitzbergen, the merry cry of the little auk unites with that of the willocks, divers, cormorants, gulls, and other aquatic birds; and everywhere groups of walruses, basking in the sun, mingle their playful roar with the husky bark of the seal. It is pleasant to reflect that in those arctic wilds, uninhabitable by man, there are still millions of creatures enjoying life, all owing their support to the inexhaustible "garners" of the deep.

In the Penguins of the southern hemisphere, the shortness of wing and aptitude for swimming and diving are still more conspicuous than in the auks of the northern regions. In the water, the penguin makes use of its small featherless wing-stumps as paddles; on land, as fore feet, with whose help it scales so rapidly the grass-grown cliffs, as to be easily mistaken for a quadruped. When at sea, and fishing, it comes to the surface for the purpose of breathing, with such a spring, and dives again so instantaneously, that at first sight no one can be sure that it is not a fish leaping for sport. Other sea-birds generally keep part of their body out of the water while swimming; but this is not the case with the penguin, whose head alone appears upon the surface; and thus it swims with such rapidity and perseverance, as almost to defy many of the fishes to equal it. How much it feels itself at home on the waters, may be inferred from the fact that Sir James Ross once saw two penguins paddling away a thousand miles from the nearest land.

Antarctic Penguin.

On many uninhabited islands in the higher latitudes of the southern hemisphere, this strange bird is met with in incredible numbers. On Possession Island, for instance, a desolate rock discovered by Sir James Ross in lat. 71° 56″, not the smallest appearance of vegetation could be found; but inconceivable myriads of penguins completely and densely covered the whole surface of the island, along the ledges of the precipices, and even to the summits of the hills, attacking vigorously the sailors as they waded through their ranks, and pecking at them with their sharp beaks, disputing possession, which, together with their loud coarse notes, and the insupportable stench from the deep bed of guano which had been forming for ages, made them glad to get away again. Sir James took possession of the island in the name of Queen Victoria; but unfortunately its treasures of manure are hidden beyond a far too formidable barrier of ice ever to be available to man.

Penguin.

Duperrey ("Voyage de la Coquille,") found the Falklands swarming with penguins. In summer and autumn these strange birds leave their burrows early in the morning, and launch into the sea for fishing. After having filled their capacious stomachs, they waddle on shore, and remain for a time congregated on the strand, raising a dreadful clamour; after which they retire to enjoy a noon-tide sleep among the high tussack grass or in their burrows. In the afternoon the fishing recommences. Lesson says that about sunset on fine summer evenings, which unfortunately are but of rare occurrence on those foggy, storm-visited islands, all the penguins together raise their discordant voices, so that at a distance the noise might be mistaken for the hoarse murmur of a great popular assembly. As soon as the young are sufficiently strong, the whole band leaves the island, departing no one knows whither, though the mariners frequenting those seas believe that they spend the winter on the ocean. This opinion seems to be corroborated by the observations of Sir James Ross, who, on the 4th of December, in 49° S. lat., met on the high sea a troop of penguins that were doubtless on the way to their breeding place. He admired the astonishing instinct of these creatures, half fish, half bird, which leads them hundreds of miles through the pathless ocean to their accustomed summer abodes.