“The position of this glacier,” says Mr. Darwin, “may be put even in a more striking point of view, for it descends to the sea-coast within less than 9° from where palms grow; within 4½° of a region where the jaguar and puma range over the plains, less than 2½° from arborescent grasses, and (looking to the westward in the same hemisphere) less than 2° from orchideous parasites, and within a single degree of tree-ferns!” As the influence of the tropical gulf stream reaches as far as Spitzbergen, so that of the cold Peruvian stream, which issues from the Antarctic Seas, extends even to the equator, and not seldom reduces the temperature of the waters about the Galapagos to less than +58½°, so that reef-building corals, which require a minimum warmth of +60°, are unable to grow near islands situated directly under the line.
Though the Antarctic lands are so bleak and inclement that not a single quadruped is to be found within 60° of latitude, yet they are the resort of innumerable sea-birds which, belonging to the same families as those of the north, generally form distinct genera or species, for with rare exceptions no bird is found to inhabit both the Arctic and the Antarctic regions.
Thus in the petrel family we find the fulmar (Procellaria glacialis) and the glacial petrel (P. gelida) of the high north represented in the Antarctic Seas by the giant petrel (Procellaria gigantea), which extends its flight from Patagonia to the ice-banks of the south, where the Antarctic and the snowy petrels (P. antarctica et nivea) first appear, cold-loving birds which never leave those dreary waters, and are often seen in vast flocks floating upon the drift-ice.
The giant petrel, which has received from the Spaniards the significant appellation of “quebranta huesos,” or “break-bones,” is a more powerful bird than the fulmar. It is larger than a goose, with a strong beak 4½ inches long. Its color is a dirty black, white below, and with white spots on the neck and back. In its habits and manner of flight it closely resembles the albatross, and, as with the albatross, a spectator may watch it for hours together without seeing on what it feeds. Like the fulmar it feasts upon fishes, or the carcasses of seals and cetaceans, but it also chases other birds. At Port Saint Antonio it was seen by some of the officers of the “Beagle” pursuing a diver, which tried to escape by diving and flying, but was continually struck down, and at last killed by a blow on its head. Such is its voracity that it does not even spare its own kind, for a gigantic petrel having been badly wounded by a shot from the “Terror,” and falling at too great a distance for a boat to be sent after it, was immediately attacked by two others of the same kind and torn to pieces. It is a common bird both in the open sea and in the inland channels of Tierra del Fuego, and the south-west coast of America.
The wandering albatross (Diomedea exulans), closely allied to the petrels, and rivalling the condor in size and strength of wing, may truly be ranked among the Antarctic birds, as it is seldom seen in a lower latitude than 36°, and increases in numbers towards the south. Freyssinet saw it most frequently between 55° and 59° S. lat., and it probably knows no other limits than those of the Polar ice. It is found in every meridian of this enormous zone, but the regions of storms—the Cape of Good Hope and Cape Horn—are its favorite resorts. Here it may frequently be seen in the full majesty of its flight.
The auks of the northern hemisphere are represented, in the austral regions, by the penguins, who, as Buffon remarks, are the least bird-like of all birds. Their small wing-stumps, covered with short rigid scale-like feathers, are altogether incapable of raising the body in the air, but serve as admirable paddles in the water, and on land as fore feet, with whose help they so alertly scale the grassy cliffs that they might easily be mistaken for quadrupeds. Their feet, like those of the auks, are placed so far back that the body is quite upright when the bird is standing on the ground, a position which renders their gait uncommonly slow and awkward, but greatly facilitates their movements in the water. When at sea and fishing, the penguin 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 a considerable part of their body out of the water while swimming, but this is not the case with the penguin, whose head alone appears above the surface, and thus rowing at the same time with its wings and feet, it swims so quickly that many fishes would fail to keep up with it. Sir James Ross once saw two penguins paddling away a thousand miles from the nearest land. Protected against the cold by a thick layer of fat and a warm great-coat of feathers, it remains for months on the high seas, and seeks land only in the summer for the purpose of breeding. At this time it is found in vast numbers on the Falkland Islands, Kerguelen’s Land, New Shetland, or wherever in the Antarctic Seas, perhaps even to the pole itself, a convenient coast invites its stay. On Possession Island, for instance, a desolate rock, discovered by Sir James Ross in lat. 71° 56´, myriads of penguins covered the whole surface of the land, along the ledges of the precipices, and even to the summit of the hills. Undaunted by the presence of beings whom they had never seen before, the birds vigorously attacked the British seamen as they waded through their ranks, and pecked at them with their sharp beaks, a reception which, together with their loud coarse notes, and the insupportable stench of their guano, made our countrymen but too happy to depart, after having loaded their boat with geological specimens and penguins. There are several species of this singular bird. The largest and rarest (Aptenodytes Forsteri) is generally found singly, while the smaller species always associate in vast numbers. Several were caught in lat. 77° by Sir James Ross and brought on board alive; indeed it was a very difficult and a cruel operation to kill them, until hydrocyanic acid was resorted to, of which a tablespoonful effectually accomplished the purpose in less than a minute. These enormous birds varied in weight from sixty to seventy-five pounds. They are remarkably stupid, and allow a man to approach them so near as to strike them on the head with a bludgeon, and sometimes, if knocked off the ice into the water, they will almost immediately leap upon it again as if eager for a fight, though without the smallest means either of offense or defense. They were first discovered during Captain Cook’s voyage to the Antarctic regions, but Sir James Ross was fortunate in bringing the first perfect specimens to England, some of which were preserved entire in casks of strong pickle, that the physiologist and comparative anatomist might have an opportunity of thoroughly examining their structure. The principal food of the great penguin consists of various species of crustaceous animals, and in its stomach are frequently found from two to ten pounds’ weight of pebbles, swallowed no doubt to promote digestion. “Its capture,” says Sir James Ross, “afforded great amusement to our people, for when alarmed and endeavoring to escape, it makes its way over deep snow faster than they could follow it: by lying down on its belly and impelling itself by its powerful feet, it slides along upon the surface of the snow at a great pace, steadying itself by extending its fin-like wings, which alternately touch the ground on the side opposite to the propelling leg.”
122. THE ALBATROSS.
Though the Antarctic Seas possess neither the narwhal nor the morse, they abound, perhaps even more than the Arctic waters, in whales, dolphins, and seals, at least in the higher latitudes.
The austral smooth-backed whale (Balæna australis) differs from his Greenland relative in many respects: the head is comparatively smaller, being only about one-fourth of the total length, the mouth is broader, the baleen shorter, the pectoral fins are larger and pointed, and the color is almost totally black, the white on the lower surface being confined to a small part of the abdomen. The skull is also differently formed; and while the Greenland whale has only thirteen pairs of ribs, the austral smooth-back has fifteen.