This remarkable bird differs in many important respects from all other pelagic species inhabiting the temperate portions of the northern hemisphere. Outside the limits of the British Islands its only other breeding places in Europe are on Iceland and the Faröes. The Gannet or Solan Goose, the _Sula bassana_ of Brisson and modern naturalists, is one of the most pelagic of birds. Except during the breeding season it is rarely seen near land, the thousands of birds that congregate in a few chosen spots round the British coasts dispersing themselves far out to sea as soon as the duties of the year are over. Like the Albatross, the Gannet may almost be said to live in the air. Its powers of flight are simply magnificent. Occasionally a few odd birds may be observed here and there fishing in the bays, during autumn and winter; but the person who would study its habits and movements thoroughly must visit one of its breeding places. There are many colonies of Gannets round the British coasts, one of the most accessible, and perhaps the most famous, being on the Bass Rock, in the Firth of Forth. There are small ones on Lundy Island and Grassholm; large ones on Suleskerry, Sulisker, St. Kilda, Ailsa Craig, and Little Skellig. The adult plumage of the Gannet is white, tinged with buff on the head and neck, except the primaries, which are black. The bare skin round the base of the bill is blue. The bird probably does not attain its white plumage until nearly four years old, passing through a series of mottled stages of black, brown, and white. The young are hatched blind and naked, but eventually become clothed in dense white down. Other structural peculiarities are the closed nostrils, and the subcutaneous air cells almost covering the body, which the bird can fill with air at will, as they communicate with the lungs. Whether seen at its nest, or when fishing at sea, the Gannet is a remarkably interesting bird. As may naturally be inferred, a bird so light and buoyant as the Gannet does not obtain its food by diving. It is incapable of submerging itself even for a little distance, except by gaining sufficient momentum from a plunge headlong from some distance in the air. Nevertheless, the Gannet feeds exclusively on fishes, which it catches almost like a Tern, by dropping from a great height and seizing or impaling them with its strong bill. The Gannets follow the shoals of fish as they swim near the surface. First one bird, and then another, will be seen to poise itself, and then, with closed wings, to dash downwards, glinting like a piece of white marble in the sun, into the sea, disappearing for a moment, then rising again into the air to prepare for another descent. Many Gannets at these times may, perhaps, be seen swimming, but they are merely resting, not fishing. The captured fish is invariably swallowed at once. The sitting birds are kept well supplied with fish by their mates. These fish, however, are not conveyed