Herds of walrus, ai´bwêk (Odobænus obesus), pass along the coast in the open season, generally resting on cakes of floating ice, and are pursued for their hides and ivory as well as their flesh and blubber. Whales, akbwêk, of the species Balæna mysticetus, most pursued for its oil and whalebone, travel along the coast in the leads of open water above described from the middle of April to the latter part of June in large numbers, and return in the autumn, appearing about the end of August. White whales, kĭlĕlua (Delphinapterus sp.), are not uncommon in the summer, and they say the narwhal, tugálĭñ (Monodon monoceros), is occasionally seen. They are also acquainted with another cetacean, which they call áxlo, and which appears from their description to be a species of Orca. _Birds._--In the spring, that is during May and the early part of June, vast flocks of migrating ducks pass to the northeast, close to the shore, a few only remaining to breed, and return at the end of the summer from the latter part of July to the end of September. Nearly all the returning birds cross the isthmus of Point Barrow at Pernyɐ where the natives assemble in large numbers for the purpose of taking them. These migrating birds are mostly king ducks, kĭñalĭñ (Somateria spectabilis), Pacific eiders, amau´lĭñ (S. v-nigra), and long-tailed ducks, a´dyigi´a, a´hadlĭñ (Clangula hyemalis), with smaller numbers of the spectacled eider, ka´waso (Arctonetta fischeri), and Steller’s ducks, ĭgnikau´kto (Eniconetta stelleri). At the rivers they also find numbers of pintails, i´vwûgɐ (Dafila acuta), which visit the coast in small numbers during the migrations. Geese of three species, the American white-fronted goose, nû´glûgruɐ (Anser albifrons gambeli), the lesser snow-goose, kû´ño (Chen hyperborea), and the black brant, nûglû´gnɐ (Branta nigricans), are not uncommon on the coast both during the migrations and the breeding season, but the natives find them in much greater abundance at the rivers, where they also find a species of swan, ku´gru, probably Olor columbianus, which rarely visits the coast. Next in importance to the natives are the gulls, of which the Point Barrow gull, nau´yɐ (Larus barrovianus), is the most abundant all through the season, though the rare rosy gull, kă´ñmaxlu (Rhodostethes rosea), appears in multitudes late in the autumn. The ivory gull (Gavia alba), nariyalbwûñ, and Sabine’s gull, yûkû´drĭgûgi´ɐ (Xema Sabinii), are uncommon, while the Arctic tern, utyuta´kĭn (Sterna paradisea), is rather abundant, especially about the sandspits of Nuwŭk. All these species, particularly the larger ones, are taken for food.