The sea fowl mentioned above are never met with inland. They never settle on a grassy sward or on a level sandy beach. The steep fowl-fell sides, the sea, ground-ice, pieces of drift-ice and small stones rising above the water, form their habitat. They swim with great skill both on, and under the water. The black guillemots and rotges fly swiftly and well; Bruennich's guillemots, on the contrary, heavily and ill. The latter therefore do not perhaps remove in winter farther from their hatching places than to the nearest open water, and it is probable that colonies of Bruennich's guillemots are not located at places where the sea freezes completely even far out from the coast. On this perhaps depends the scarcity of Bruennich's guillemot in the Kara Sea. While sailing in the Arctic Ocean, vessels are nearly always attended by two kinds of gulls, the greedy _stormaosen_ or _borgmaesteren_, glaucous gull (_Larus glaucus_, Bruenn.), and the gracefully formed, swiftly flying _kryckian_ or _tretaoiga maosen_, kittiwake (_Larus tridactylus_, L.), and if the hunter lies to at an ice-floe to flense upon it a seal which has been shot, it is not long till a large number of snow-white birds with dark blue bills and black legs settle down in the neighbourhood in order that they may get a portion of the spoil. They belong to the third kind of gull common in the north, _ismaosen_, the ivory gull (_Larus eburneus_, Gmel.). [Illustration: BREEDING-PLACE FOR GLAUCOUS GULLS. Borgmaestareport on Bear Island, after a midnight photograph taken by the Author on the 18th-19th June, 1864. ]