The next process is to partition out the whole area into small squares exactly equal in size. This is done by forming narrow paths, very smooth, and crossing each other at right angles throughout the entire extent of the rookery. At each intersection of these paths the nest of an albatross is constructed, and a penguin’s nest in the centre of each square—thus every penguin is surrounded by four albatrosses, and each albatross by a like number of penguins. The penguin’s nest consists of a hole in the earth, very shallow, being only just of sufficient depth to keep her single egg from rolling. The albatross is somewhat less simple in her arrangements, erecting a hillock about a foot high and two in diameter. This is made of earth, seaweed, and shells. On its summit she builds her nest. The birds take especial care never to leave their nests unoccupied for an instant during the period of incubation, or, indeed, until the young progeny are sufficiently strong to take care of themselves. While the male is absent at sea in search of food, the female remains on duty, and it is only upon the return of her partner that she ventures abroad. The eggs are never left uncovered at all—while one bird leaves the nest the other nestling in by its side. This precaution is rendered necessary by the thieving propensities prevalent in the rookery, the inhabitants making no scruple to purloin each other’s eggs at every good opportunity. Although there are some rookeries in which the penguin and albatross are the sole population, yet in most of them a variety of oceanic birds are to be met with, enjoying all the privileges of citizenship, and scattering their nests here and there, wherever they can find room, never interfering, however, with the stations of the larger species. The appearance of such encampments, when seen from a distance, is exceedingly singular. The whole atmosphere just above the settlement is darkened with the immense number of the albatross (mingled with the smaller tribes) which are continually hovering over it, either going to the ocean or returning home. At the same time a crowd of penguins are to be observed, some passing to and fro in the narrow alleys, and some marching with the military strut so peculiar to them, around the general promenade ground which encircles the rookery. In short, survey it as we will, nothing can be more astonishing than the spirit of reflection evinced by these feathered beings, and nothing surely can be better calculated to elicit reflection in every well-regulated human intellect.