#order_Gaviiformes__Gaviiformes  large aquatic birds: loons and some extinct forms
  supertype:  animal_order  the order of animals
  member of:  class_Aves
  member:  gaviiform_seabird__gaviiformseabird  seabirds of the order Gaviiformes
  member:  family_Gavidae__Gavidae  loon family
     member:  genus_Gavia__Gavia  type genus of the Gavidae: loons
        member:  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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