a bird that frequents coastal waters and the open ocean: gulls; pelicans; gannets; cormorants; albatrosses; petrels; etc.

web-footed diving seabirds of northern seas: auks; puffins; guillemots; murres; etc.

any of several small auks of the northern Pacific coasts

black-and-white northern Atlantic auk having a compressed sharp-edged bill

small short-billed auk abundant in Arctic regions

large flightless auk of rocky islands off northern Atlantic coasts; extinct

small black or brown speckled auks of northern seas

web-footed diving seabirds of northern seas: auks; puffins; guillemots; murres; etc.