A Native catching little Auks (_Simorhyncus Pusillus_), St. Paul’s Island] While the great exhibition of pinnipedia preponderates over every other feature of animal life at the Seal Islands, still there is a wonderful aggregate of ornithological representation thereon. The spectacle of birds nesting and breeding, as they do on St. George Island, to the number of millions, flecking those high basaltic bluffs of its shore-line, twenty-nine miles in length, with color-patches of black, brown, and white, as they perch or cling to the mural cliffs in the labor of incubation, is a sight of exceeding attraction and constant novelty. It affords a naturalist an opportunity of a lifetime for minute investigation into all the details of the reproduction of these vast flocks of circumboreal water-fowl. The Island of St. Paul, owing to the low character of its shore-line, a large proportion of which is but slightly elevated above the sea and is sandy, is not visited and cannot be visited by such myriads of birds as are seen at St. George; but the small rocky Walrus Islet is fairly covered with sea-fowls, and the Otter Island bluffs are crowded by them to their utmost capacity of reception. The birds string themselves anew around the bluffs with every succeeding season, like endless ribbons stretched across their rugged faces, while their numbers are simply countless. The variety is not great, however, in these millions of breeding-birds. It consists of only ten or twelve names, and the whole list of birds belonging to the Pribylov Islands, stragglers and migratory, contains but forty species. Conspicuous among the last-named class is the robin, a straggler which was brought from the mainland, evidently against its own effort, by a storm or a gale of wind, which also brings against their will the solitary hawks, owls, and waders occasionally noticed here.