#gaviiform_seabird__gaviiformseabird  seabirds of the order Gaviiformes
  supertype:  #seabird__sea_bird__seabird__seafowl  a bird that frequents coastal waters and the open ocean: gulls; pelicans; gannets; cormorants; albatrosses; petrels; etc.
  member of:  #order_Gaviiformes
  subtype:  #loon.gaviiform_seabird__diver  large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes

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