The three southern Diving Petrels, forming the next family, are much smaller than the common Petrels. They are expert divers, and are found mainly in the far South.
The mighty Albatross, with its enormous wing-span of possibly up to 14 feet, is also largely a southern bird. That this bird has spread to the North Pacific Ocean, but has not yet penetrated any distance into the Atlantic, is another piece of evidence as to the age of these two oceans. The Pacific Ocean is a very ancient depression, while the Atlantic is much younger, and has been formed since the lands which border its shores. The Black-browed Albatross, however, was once seen in England. Probably this bird might have been carried north on board ship, and then set free again. Fossil bones of Albatrosses have been found in France and England. Their remarkable power of wheeling round and round a vessel, with no perceptible movement of the wing, has excited much interest and controversy.
Mr. Froude, in his Oceana, has given a vivid description of this flight. The Albatross "wheels in circles round and round and for ever round the ship—now far behind, now sweeping past in a long, rapid curve, like a perfect skater on an untouched field of ice. There is no effort; watch as closely as you will, you rarely or never see a stroke of the mighty pinion. The flight is generally near the water, often close to it. You lose sight of the bird as he disappears in the hollow between the waves, and catch him again as he rises over the crest; but how he rises, and whence comes the propelling force, are to the eye inexplicable; he alters merely the angle at which the wings are inclined...."
Gould considered that many of these birds circumnavigate the globe many times. They follow ships for days together.
Albatrosses are sometimes caught by those on board ship. One means of protection employed by these birds is to discharge a considerable quantity of oily matter at an intruder. This has led sailors to declare that the bird is "seasick." Some claim that this is not done for protection, but is due to fright.
The members of the Australasian Ornithologists' Union, when on a trip in the Manawatu to the Bass Strait Islands found it tantalizing to see the beautiful Shy Albatrosses sitting on their nests on the precipitous granite Albatross Rock, and be unable to land owing to the rough sea that was running. We waited a second and a third day, in the shelter of Chimney Corner, Three Hummocks Island, but finally had to depart with but a distant acquaintance with this fine bird. When they return to nest the succeeding year, the parents drive last year's brood off the island. Does the young live on its fat all through the cold, rough winter, or do the parents return at intervals to feed it? Some recent records by a French party on one of these lonely nesting islands show that in some cases, at least, the parents do feed the young at night during their long wait. The sitting bird is fed by her mate. He opens his mouth, and she inserts her bill, and chooses a dainty for herself.
A Monograph of the Petrels, by F. Du Cane Godman, F.R.S., Pres. British Ornithologists' Union, was consulted for Order VIII.
